Generated by All in One SEO v4.9.1.1, this is an llms.txt file, used by LLMs to index the site. # Bart Hopkin MUSICIAN AND INSTRUMENT DESIGNER ## Sitemaps - [XML Sitemap](https://barthopkin.com/sitemap.xml): Contains all public & indexable URLs for this website. ## Posts - [MALLET HEADS](https://barthopkin.com/mallet-heads/) - [PALINDROMES](https://barthopkin.com/palindromes/) - The only article on Bart Hopkin's web site that isn't about musical instruments. - [EVERYONE WANTS BEACH-FRONT REAL ESTATE](https://barthopkin.com/everyone-wants-beach-front-real-estate/) - An article about how to maximize the precious space in front of a magnetic pickup - [The Undertone Instruments Collection](https://barthopkin.com/the-undertone-instruments-collection/) - [COIL SPRINGS AS SOUND SOURCES](https://barthopkin.com/coil-springs-as-sound-sources/) - [et_pb_section bb_built=”1″ inner_width=”auto” inner_max_width=”1281px”][et_pb_row][et_pb_column type=”4_4″ custom_padding__hover=”|||” custom_padding=”|||”][et_pb_text _builder_version=”4.23.3″ background_pattern_color=”rgba(0,0,0,0.2)” background_mask_color=”#ffffff” text_text_shadow_horizontal_length=”text_text_shadow_style,%91object Object%93″ text_text_shadow_horizontal_length_tablet=”0px” text_text_shadow_vertical_length=”text_text_shadow_style,%91object Object%93″ text_text_shadow_vertical_length_tablet=”0px” text_text_shadow_blur_strength=”text_text_shadow_style,%91object Object%93″ text_text_shadow_blur_strength_tablet=”1px” link_text_shadow_horizontal_length=”link_text_shadow_style,%91object Object%93″ link_text_shadow_horizontal_length_tablet=”0px” link_text_shadow_vertical_length=”link_text_shadow_style,%91object Object%93″ link_text_shadow_vertical_length_tablet=”0px” link_text_shadow_blur_strength=”link_text_shadow_style,%91object Object%93″ link_text_shadow_blur_strength_tablet=”1px” ul_text_shadow_horizontal_length=”ul_text_shadow_style,%91object Object%93″ ul_text_shadow_horizontal_length_tablet=”0px” ul_text_shadow_vertical_length=”ul_text_shadow_style,%91object Object%93″ ul_text_shadow_vertical_length_tablet=”0px” ul_text_shadow_blur_strength=”ul_text_shadow_style,%91object Object%93″ ul_text_shadow_blur_strength_tablet=”1px” ol_text_shadow_horizontal_length=”ol_text_shadow_style,%91object Object%93″ ol_text_shadow_horizontal_length_tablet=”0px” ol_text_shadow_vertical_length=”ol_text_shadow_style,%91object Object%93″ ol_text_shadow_vertical_length_tablet=”0px” ol_text_shadow_blur_strength=”ol_text_shadow_style,%91object Object%93″ ol_text_shadow_blur_strength_tablet=”1px” quote_text_shadow_horizontal_length=”quote_text_shadow_style,%91object Object%93″ quote_text_shadow_horizontal_length_tablet=”0px” quote_text_shadow_vertical_length=”quote_text_shadow_style,%91object Object%93″ quote_text_shadow_vertical_length_tablet=”0px” quote_text_shadow_blur_strength=”quote_text_shadow_style,%91object Object%93″ quote_text_shadow_blur_strength_tablet=”1px” Coil springs can make very interesting sounds, and a lot of experimental instrument makers and sound seekers have worked with them. In this article we’ll look at some of the sound possibilities that coil springs present. - [METAL SHEET INSTRUMENTS](https://barthopkin.com/metal-sheet-instruments/) - [COMPLEX TIMBRES IN MUSICAL CONTEXT](https://barthopkin.com/complex-timbres-in-musical-context/) - [HARMONIC DAMPING](https://barthopkin.com/harmonic-damping/) - [SOLOWAY SIREN AND SAXTON SAVART](https://barthopkin.com/soloway-siren-and-saxton-savart/) - [FIRST PRINCIPLES](https://barthopkin.com/first-principles/) - [FUNDAMENTAL, HARMONICS, OVERTONES, PARTIALS, MODES](https://barthopkin.com/fundamental-harmonics-overtones-partials-modes/) - How different sorts of overtones affect our perceptions of musical tone quality. - [OVERTONES HARMONIC AND INHARMONIC](https://barthopkin.com/overtones-harmonic-and-inharmonic/) - Exploring odd and inharmonic overtone blends in musical instruments. - [AUDIORIUM -- a new album from Bart](https://barthopkin.com/audiorium-a-new-album-from-bart/) - [SCALE-LOGICS](https://barthopkin.com/scale-logics/) - [SAMPLING A PREPARED PIANO](https://barthopkin.com/sampling-a-prepared-piano/) - [CONJOINED STRING SYSTEMS](https://barthopkin.com/conjoined-string-systems/) - [WHICH MODE DOMINATES?](https://barthopkin.com/which-mode-dominates/) - [NOTES ON A MINIMAL KEYBOARD INSTRUMENT](https://barthopkin.com/notes-on-a-minimal-keyboard-instrument/) - [SHARED RESONANCES](https://barthopkin.com/shared-resonances/) - [THE WINDOW GALLERY AT SAN FRANCISCO'S CENTER FOR NEW MUSIC](https://barthopkin.com/the-window-gallery-at-san-franciscos-center-for-new-music/) - [POTWOT: A Torsional Musical Instrument](https://barthopkin.com/potwot-a-torsional-musical-instrument/) - [et_pb_section bb_built=”1″ admin_label=”section” transparent_background=”off” background_color=”#f4f5ef” allow_player_pause=”off” inner_shadow=”off” parallax=”off” parallax_method=”off” make_fullwidth=”off” use_custom_width=”off” width_unit=”on” make_equal=”off” use_custom_gutter=”off” inner_width=”auto” inner_max_width=”1281px”][et_pb_row admin_label=”row” background_position=”top_left” background_repeat=”repeat” background_size=”initial” width=”80%” max_width=”1281px”][et_pb_column type=”5_6″ custom_padding__hover=”|||” custom_padding=”|||”][et_pb_text use_border_color=”off” module_alignment=”left” background_position=”top_left” background_repeat=”repeat” background_size=”initial” _builder_version=”4.19.3″ text_text_shadow_horizontal_length=”text_text_shadow_style,%91object Object%93″ text_text_shadow_horizontal_length_tablet=”0px” text_text_shadow_vertical_length=”text_text_shadow_style,%91object Object%93″ text_text_shadow_vertical_length_tablet=”0px” text_text_shadow_blur_strength=”text_text_shadow_style,%91object Object%93″ text_text_shadow_blur_strength_tablet=”1px” link_text_shadow_horizontal_length=”link_text_shadow_style,%91object Object%93″ link_text_shadow_horizontal_length_tablet=”0px” link_text_shadow_vertical_length=”link_text_shadow_style,%91object Object%93″ link_text_shadow_vertical_length_tablet=”0px” link_text_shadow_blur_strength=”link_text_shadow_style,%91object Object%93″ link_text_shadow_blur_strength_tablet=”1px” ul_text_shadow_horizontal_length=”ul_text_shadow_style,%91object Object%93″ ul_text_shadow_horizontal_length_tablet=”0px” ul_text_shadow_vertical_length=”ul_text_shadow_style,%91object Object%93″ ul_text_shadow_vertical_length_tablet=”0px” I couldn't think of any musical instruments based on torsional vibration. So I made one. . - [MORE ON MEMBRANE REEDS](https://barthopkin.com/more-on-membrane-reeds/) - #post_contentInformation on membrane reeds, an unusual type of reed instrument. - [NORTH-SOUTH/EAST-WEST CHIMES (a Description)](https://barthopkin.com/north-south-east-west-chimes-a-description/) - [ADVENTURES IN FRICTION](https://barthopkin.com/adventures-in-friction/) - A review of possibilities for making musical instruments activated by friction - [WHAT-A-SHAME: Design and Construction](https://barthopkin.com/what-a-shame-design-and-construction/) - [WOOD AND BUTTER](https://barthopkin.com/wood-and-butter/) - [HOCKETING](https://barthopkin.com/hocketing/) - [TUBULAR CHIMES, ALTERED](https://barthopkin.com/tubular-chimes-altered/) - Things you can do to alter the sounds of tubular chimes. - [ROTARY MUSIC MACHINES](https://barthopkin.com/rotary-music-machines/) - #post_contentSimple home-buildable music machines. - [SCRAPING](https://barthopkin.com/2744-2/) - #post_contentAn exploration of the sonic world of scrape, and description of a battery of scraped instruments analogous to drum set. - [PLAY HERE](https://barthopkin.com/play-here/) - Description of an open, public sound installation in San Francisco's Tenderloin district, with thoughts about challenges and requirements for public sound art. - [SOUND INVENTIONS: Selected Articles from Experimental Musical Instruments](https://barthopkin.com/sound-inventions-selected-articles-from-experimental-musical-instruments/) - [GUITAR-LIKE-THINGS](https://barthopkin.com/guitar-like-things/) - #post_contentDescriptions of several instruments designed to play like guitars, but with various oddnesses built in. - [THE SPEAKER DRIVER INSTRUMENT](https://barthopkin.com/the-speaker-driver-instrument/) - [STRING LATTICE GUITAR](https://barthopkin.com/string-lattice-guitar/) - #post_contentExploring the possibiltiy of tunable soundboard resonances: A guitar-like instrument in which the soundboard is replaced by a lattice of 54 unplayed strings. - [SPOOLS & WHEELS](https://barthopkin.com/spools-wheels-2/) - [et_pb_section bb_built=”1″ admin_label=”section” transparent_background=”off” background_color=”#f4f5ef” allow_player_pause=”off” inner_shadow=”off” parallax=”off” parallax_method=”off” make_fullwidth=”off” use_custom_width=”off” width_unit=”on” make_equal=”off” use_custom_gutter=”off” inner_width=”auto” inner_max_width=”1281px”][et_pb_row admin_label=”row” background_position=”top_left” background_repeat=”repeat” background_size=”initial” width=”80%” max_width=”1281px”][et_pb_column type=”5_6″ custom_padding__hover=”|||” custom_padding=”|||”][et_pb_text use_border_color=”off” module_alignment=”left” background_position=”top_left” background_repeat=”repeat” background_size=”initial” _builder_version=”4.9.7″ text_text_shadow_horizontal_length=”text_text_shadow_style,%91object Object%93″ text_text_shadow_horizontal_length_tablet=”0px” text_text_shadow_vertical_length=”text_text_shadow_style,%91object Object%93″ text_text_shadow_vertical_length_tablet=”0px” text_text_shadow_blur_strength=”text_text_shadow_style,%91object Object%93″ text_text_shadow_blur_strength_tablet=”1px” link_text_shadow_horizontal_length=”link_text_shadow_style,%91object Object%93″ link_text_shadow_horizontal_length_tablet=”0px” link_text_shadow_vertical_length=”link_text_shadow_style,%91object Object%93″ link_text_shadow_vertical_length_tablet=”0px” link_text_shadow_blur_strength=”link_text_shadow_style,%91object Object%93″ link_text_shadow_blur_strength_tablet=”1px” ul_text_shadow_horizontal_length=”ul_text_shadow_style,%91object Object%93″ ul_text_shadow_horizontal_length_tablet=”0px” ul_text_shadow_vertical_length=”ul_text_shadow_style,%91object Object%93″ ul_text_shadow_vertical_length_tablet=”0px” A friction drum instrument with a range of an octave and a half, capable of playing melodies in a buzzy-bestial sort of tone. - [THREE PASSAGES FROM *INNER CHAPTERS*](https://barthopkin.com/three-passages-from-inner-chapters-2/) - [MUSICAL INSTRUMENT CATEGORIZATION SYSTEMS](https://barthopkin.com/musical-instrument-categorization-systems/) - Creating a logically consistent taxonomy for musical instruments is a thought-provoking challenge. - [SCALE AND TIMBRE](https://barthopkin.com/175-2/) - The relationship between the pitch content of overtone recipes of different musical tones and the scales they play in. - [SYNTHESIS vs SAMPLING](https://barthopkin.com/248-2/) - In seeking new and interesting tone qualities, electronic musicians these days do a lot more sampling than synthesis. It's interesting to consider why. - [MAN, WHAT A WEIRD WORLD THAT WOULD BE (Where would we be without Hooke’s Law?)](https://barthopkin.com/250-2/) - What would it be like if most musical tones were bendy instead of steady? - [ORIENTATION OF THE OSCILLATION](https://barthopkin.com/orientation-of-the-oscillation/) - For some types of musical instruments, the direction of vibration is an important part of instrument design, but often overlooked. - [THE TERRITORY BETWEEN CLEAR PITCH AND PURE NOISE](https://barthopkin.com/249-2/) - What is it about some sounds that gives them clear pitch, while other sounds come across as pitchless noise? - [THERE IS NOTHING NEW UNDER THE SUN](https://barthopkin.com/there-is-nothing-new-under-the-sun/) - Claim or share: Does it ever make sense to patent musical instrument design ideas? - [OVER-UNDER SCALES](https://barthopkin.com/otonuton-scales/) - Exploration of musical scales using harmonics 8 through 16 and subharmonics 8 through 16. - [MASTERY VS. GO-FOR-A-RIDE](https://barthopkin.com/mastery-vs-go-for-a-ride/) - Should you seek to gain full control of your instrument, or do you let the instrument suggest the kinds of music it wants to make? - [ENGRAVINGS OF EARLY ACOUSTICAL APPARATUS](https://barthopkin.com/woodcuts-of-early-scientific-acoustical-apparatus/) - Ten beautiful old depictions of 19th-century devices used for acoustical research and demonstrations. - [SOUNDS AND SILENCE](https://barthopkin.com/sounds-and-silence/) - A meditation on environmental noise. - [ALTERNATIVES FOR PITCH CONTROL IN WIND INSTRUMENTS](https://barthopkin.com/alternatives-for-pitch-control-in-wind-instruments/) - Conventional and unconventional means for pitch control in winds: toneholes, valves, slides, plus other approaches you probably never thought of before. - [ALUMINUM DISK GONGS (Article #1)](https://barthopkin.com/aluminum-disk-gongs-article-1/) - Number one of two articles on the making and tuning of simple flat disk gongs. - [ALUMINUM DISK GONGS (Article #2)](https://barthopkin.com/1329-2/) - Number 2 of two articles on making and tuning simple flat disk gongs. This one goes into more detail on the math and physics of overtone tuning. - [AGITATION PIPES](https://barthopkin.com/agitation-pipes/) - Musical instruments in which a broad-spectrum sound source filters through a resonant pipe, creating a tone that is complex and variable, but has clear pitch. - [ELASTIC STRINGS](https://barthopkin.com/elastic-strings/) - A look at the use of elastic strings in musical instruments, including rubber bands and other forms of latex, as well as polyurethane and silicon rubber. - [INSTRUMENTARIUM HOPKINIS SAMPLE LIBRARIES](https://barthopkin.com/instrumentarium-hopkinis-sample-libraries/) - Soundiron will soon be releasing a series of audio sample libraries representing experimental musical instruments made by Bart Hopkin. - [IMPEDANCE](https://barthopkin.com/impedance/) - A practical and non-technical look at impedance relationships in experimental musical instrument design. - [THE WINDOW OF AUDIBILITY](https://barthopkin.com/the-window-of-audibility/) - How does the ear make sense of musical sounds in which the fundamental is too low to be heard? - [SORRY-ASS ORGAN](https://barthopkin.com/sorry-ass-organ/) - Description of a simple non-keyboard acoustic reed-pipe organ with an appealingly crude sound - [NAMES AND APPEARANCES](https://barthopkin.com/names-and-appearances/) - In designing and building new musical instruments, does it matter if you give them a catchy name? Are looks important? - [FORCED VIBRATION](https://barthopkin.com/forced-vibration/) - Most acoustic musical instruments use the natural springiness of their materials to create oscillation and determine frequency. Only a use mechanical systems to force the vibration. - [MORE 'MOE](https://barthopkin.com/more-moe/) - Recent developments in the unique system for pitch control in the 'Moe family of wind instruments. - [ADDITIONAL NOTES PERTAINING TO HOMEMADE WOODWIND MAKING](https://barthopkin.com/additional-notes-pertaining-to-homemade-woodwind-making/) - [ANIMATIONS](https://barthopkin.com/animations/) - [SLOPPINESS](https://barthopkin.com/sloppiness/) - [SCHMEARY GLISSARY](https://barthopkin.com/schmeary-glissary/) - [ICICLES AND MORE](https://barthopkin.com/icicles-and-more/) - [MORE SAMPLE LIBRARIES](https://barthopkin.com/more-sample-libraries/) - [FLOPPING OVER](https://barthopkin.com/flopping-over/) ## Pages - [Home](https://barthopkin.com/) - [Schmeary Glissary](https://barthopkin.com/instrumentarium/schmeary-glissary/) - [CONTACT](https://barthopkin.com/contact/) - [BOWED T-RODS](https://barthopkin.com/instrumentarium/bowed-t-rods/) - [Lifoam](https://barthopkin.com/instrumentarium/lifoam/) - [Sticks in Strings](https://barthopkin.com/instrumentarium/sticks-in-strings/) - [Skatewheel Transverse](https://barthopkin.com/instrumentarium/skatewheel-transverse/) - [PEPPER TAILPIECES](https://barthopkin.com/instrumentarium/pepper-tailpieces/) - This one-of-a-kind musical instrument is a bendy-string zither. - [VIDEOS](https://barthopkin.com/videos/) - Music videos by Bart Hopkin - [WATERFALL](https://barthopkin.com/instrumentarium/waterfall/) - [Extremely Handsome Dan](https://barthopkin.com/extremely-handsome-dan/) - [BIG WEIGHTS](https://barthopkin.com/instrumentarium/big-weights/) - [Spaghetti](https://barthopkin.com/spaghetti/) - [SHORT STRINGS](https://barthopkin.com/instrumentarium/short-strings/) - [Half & Half](https://barthopkin.com/half-half/) - [SSS-SK1](https://barthopkin.com/instrumentarium/sss-sk1/) - [SSS-Z1](https://barthopkin.com/instrumentarium/sss-z1/) - [INSTRUMENTARIUM](https://barthopkin.com/instrumentarium/) - The INSTRUMENTARIUM contains images, information and sound clips for a variety of interesting and unusual instruments invented by Bart Hopkin. - [SSS-SP 3, 8 & 16](https://barthopkin.com/instrumentarium/sss-sp-3-8-16/) - [Sprongle-Small](https://barthopkin.com/instrumentarium/sprongle-small/) - [Sprongle-Big](https://barthopkin.com/instrumentarium/sprongle-big/) - [The Other Side 2 & 3](https://barthopkin.com/instrumentarium/the-other-side-2-3/) - [Spin Chimes](https://barthopkin.com/spin-chimes/) - [OPEN DTF](https://barthopkin.com/instrumentarium/open-dtf/) - A musical instrument using close to two hundred chimes for a chromatic range of over two octaves. - [RUMBA BOX](https://barthopkin.com/instrumentarium/rumba-box/) - [CÍQUE](https://barthopkin.com/instrumentarium/cique/) - [Kíque](https://barthopkin.com/instrumentarium/kique/) - [PSALT WATER](https://barthopkin.com/psalt-water/) - [SSP STRINGS](https://barthopkin.com/ssp-strings/) - [Crickets Prepared Piano](https://barthopkin.com/instrumentarium/crickets-prepared-piano/) - [Fork Bells](https://barthopkin.com/fork-bells-2/) - [DAN’S ALUMINUM 1](https://barthopkin.com/instrumentarium/dans-aluminum-1/) - [GONGS](https://barthopkin.com/instrumentarium/gongs/) - [THE OTHER SIDE](https://barthopkin.com/instrumentarium/the-other-side/) - [U](https://barthopkin.com/u/) - [RATTLETINE](https://barthopkin.com/instrumentarium/rattletine/) - [Sad Aggie](https://barthopkin.com/sad-aggie/) - [Silver and Black](https://barthopkin.com/instrumentarium/silver-and-black/) - [Only Ten](https://barthopkin.com/instrumentarium/only-ten/) - [Seventeen Coils](https://barthopkin.com/instrumentarium/seventeen-coils/) - [GURGLE ORGAN](https://barthopkin.com/instrumentarium/gurgle-organ/) - [DINOSAUR AND SHAKER ARMS](https://barthopkin.com/dinosaur-and-shaker-arms/) - [DABBA SHAKERS](https://barthopkin.com/instrumentarium/dabba-shakers/) - [SCRAPER FLUTES](https://barthopkin.com/instrumentarium/scraper-flutes/) - [WAFFLE GURGLE FLUTE](https://barthopkin.com/instrumentarium/waffle-gurgle-flute/) - [Gurgle Ock](https://barthopkin.com/instrumentarium/gurgle-ock/) - [Spools & Wheels](https://barthopkin.com/instrumentarium/spools-wheels/) - [BREATH FLUTE](https://barthopkin.com/instrumentarium/breath-flute/) - A new flute-like instrument with an evocatively windy sort of sound. - [NORTH-SOUTH/EAST-WEST CHIMES](https://barthopkin.com/north-southeast-west-chimes/) - [SIREN](https://barthopkin.com/instrumentarium/siren/) - [Hammertine 2](https://barthopkin.com/hammertine-2/) - [TINES & ECHOES](https://barthopkin.com/instrumentarium/tines-echoes/) - [MUSIC](https://barthopkin.com/music/) - [HHK](https://barthopkin.com/hhk-bridge/) - [Mallet K](https://barthopkin.com/mallet-k/) - [Airy-Air and Bari Airy-Air](https://barthopkin.com/instrumentarium/airy-air-and-bari-airy-air/) - [COMBS](https://barthopkin.com/instrumentarium/combs/) - [Audiorium](https://barthopkin.com/audiorium/) - [BOOKS & CDs](https://barthopkin.com/books-cds/) - Purchase Books and CDs by Bart Hopkin, musician and instrument designer - [21 Ways of Looking at Things](https://barthopkin.com/books-cds/21-ways-of-looking-at-things/) - Sound Instruments Designed by Bart Hopkin Audio CD with 4-page booklet. Published by Experimental Musical Instruments, 2007. Twenty-one soundscapes created with invented instruments — oddly musical, richly textural, never opaque, always evocative. - [Instrumentarium Hopkinis: Bart Hopkin Plays Invented Instruments](https://barthopkin.com/books-cds/instrumentarium-hopkinis-bart-hopkin-plays-invented-instruments/) - In this audio CD, Bart Hopkin (the founder and still the main guy at Experimental Musical Instruments) plays his own instruments. Great music played on a wildly diverse collection of instruments. Includes 16-page booklet with information on the instruments. - [Very Long Strings](https://barthopkin.com/instrumentarium/very-long-strings/) - [Hammer & Slide](https://barthopkin.com/instrumentarium/hammer-slide/) - [Twizzle Down](https://barthopkin.com/instrumentarium/twizzle-down/) - [OSTINATO MACHINE](https://barthopkin.com/instrumentarium/ostinato-machine/) - [FORMANT CHANGER AND SPEAKER DRIVER](https://barthopkin.com/instrumentarium/formant-changer-and-speaker-driver/) - [Rotisserie Friction](https://barthopkin.com/instrumentarium/rotisserie-friction/) - [STRINGTINE](https://barthopkin.com/instrumentarium/stringtine/) - [2 + 1](https://barthopkin.com/2-1/) - [STROKED ZITHER](https://barthopkin.com/instrumentarium/stroked-zither/) - [GLASS-ON-TINE](https://barthopkin.com/glass-on-tine/) - [MOE-MEM](https://barthopkin.com/moemem/) - [‘MOE SAX](https://barthopkin.com/instrumentarium/moe-sax/) - [‘MOE FLUTE](https://barthopkin.com/instrumentarium/moe-flute/) - A recorder-like musical instrument that can slide as much as you want, but can also play discrete pitches. - [’MOE](https://barthopkin.com/instrumentarium/moe/) - [BAMBOO IDIOMOUNT](https://barthopkin.com/instrumentarium/bamboo-idiomount/) - [STRIFFERTINE](https://barthopkin.com/instrumentarium/striffertine/) - [Water K](https://barthopkin.com/instrumentarium/water-k/) - [MANUAL STOMP](https://barthopkin.com/manual-stomp/) - [5-HULLOO](https://barthopkin.com/instrumentarium/5-hulloo/) - [BIG MEMREED](https://barthopkin.com/instrumentarium/big-memreed/) - [WOODEN SAX](https://barthopkin.com/instrumentarium/wooden-sax/) - A soprano saxophone-like instrument made of wood. - [Play-Hear Side-Struck](https://barthopkin.com/instrumentarium/play-hear-side-struck/) - [DUAL SLIDE WHISTLE](https://barthopkin.com/instrumentarium/dual-slide-whistle/) - [ALPHORN](https://barthopkin.com/instrumentarium/alphorn/) - [Hippy Pappy](https://barthopkin.com/instrumentarium/hippy-pappy/) - [Baritone Fretless](https://barthopkin.com/instrumentarium/baritone-fretless/) - [MILD STEEL](https://barthopkin.com/instrumentarium/mild-steel/) - [MEGALYRA-ALT](https://barthopkin.com/instrumentarium/megalyra-alt/) - [SQUIGGLY & SINUOUS](https://barthopkin.com/amejawari/) - [HHK STRINGS](https://barthopkin.com/hhk-strings/) - [PLOSIVES](https://barthopkin.com/plosives/) - [LONG STEEL FRICTION BANDS](https://barthopkin.com/instrumentarium/long-steel-friction-bands/) - [Creased Bands](https://barthopkin.com/instrumentarium/creased-bands/) - [FLOPPING OVER BANDS](https://barthopkin.com/instrumentarium/flopping-over-bands/) - [TRILLIUM CLUSTER](https://barthopkin.com/instrumentarium/trillium-cluster/) - [FOREST VINES DTF](https://barthopkin.com/instrumentarium/forest-vines-dtf/) - [Mixed Bag DTF](https://barthopkin.com/instrumentarium/mixed-bag-dtf/) - [Keyboard DTF](https://barthopkin.com/instrumentarium/keyboard-dtf/) - [Bosky Jangle](https://barthopkin.com/bosky-jangle/) - [WRITINGS](https://barthopkin.com/essays/) - [HANDSOME DAN](https://barthopkin.com/instrumentarium/harmonic-zither/) - [SHIMMERY CHIMES](https://barthopkin.com/instrumentarium/beating-chimes/) - [Cassidy Roaster](https://barthopkin.com/cassidy-roaster/) - [Minimal Clavier](https://barthopkin.com/minimal-clavier/) - [Kingso Hot or Cold](https://barthopkin.com/kingso-hot-or-cold/) - [SLIDE MEMREED](https://barthopkin.com/instrumentarium/slide-memreed/) - [Keyboard Memreed](https://barthopkin.com/keyboard-memreed/) - [SAVART’S WHEEL](https://barthopkin.com/instrumentarium/savarts-wheel/) - [4-40](https://barthopkin.com/instrumentarium/4-40/) - [Rocking Stainless](https://barthopkin.com/instrumentarium/rocking-stainless/) - [String Schmeary](https://barthopkin.com/instrumentarium/string-schmeary/) - [Guitars with Adjustable Frets](https://barthopkin.com/guitars-with-adjustable-frets/) - [Sorry-Ass Organ](https://barthopkin.com/instrumentarium/sorry-ass-organ/) - [Obtuse Trillium](https://barthopkin.com/obtuse-trillium/) - [Slide Ice](https://barthopkin.com/instrumentarium/slide-ice/) - [THOSE OTHER GONGS](https://barthopkin.com/instrumentarium/those-other-gongs/) - [Icicles and Pop Ice](https://barthopkin.com/instrumentarium/icicles-and-pop-ice/) - [SPOKO](https://barthopkin.com/instrumentarium/spoko/) - [SPOMO-HI](https://barthopkin.com/spomo-hi/) - [Nice Noise](https://barthopkin.com/nice-noise/) - [LONG MEMREED](https://barthopkin.com/instrumentarium/long-memreed/) - [Squash Bells and Forks](https://barthopkin.com/squash-bells-and-forks/) - [PIEZO TONGUES](https://barthopkin.com/instrumentarium/piezo-tongues/) - [GHING](https://barthopkin.com/ghing/) - [Wood & Butter](https://barthopkin.com/wood-butter-2/) - [Wood & Butter](https://barthopkin.com/wood-butter/) - [APRES BASCHET AIR](https://barthopkin.com/apres-baschet-air/) - [Hammertine 4](https://barthopkin.com/instrumentarium/hammertine-4/) - [Potwot](https://barthopkin.com/instrumentarium/potwot/) - [Tubular Chimes, Altered](https://barthopkin.com/instrumentarium/tubular-chimes-altered/) - [CITPHTO O.M.](https://barthopkin.com/instrumentarium/citphto-o-m/) - [Alt-Alt](https://barthopkin.com/instrumentarium/alt-alt/) - [2+2+1](https://barthopkin.com/221-2/) - [Tinfoil Bass](https://barthopkin.com/instrumentarium/tinfoil-bass/) - [TWIST HARP](https://barthopkin.com/instrumentarium/twist-harp/) - [Scraper Chimes](https://barthopkin.com/instrumentarium/scraper-chimes/) - [DAN’S ALUMINUM 3](https://barthopkin.com/instrumentarium/dans-aluminum-3/) - [SLIDE RATTLETINE](https://barthopkin.com/instrumentarium/slide-rattletine/) - [WHY SCRAPE?](https://barthopkin.com/why-scrape/) - [PLAFFERODS 1 & 2](https://barthopkin.com/instrumentarium/plafferods-1-2/) - A one-of-a-kind musical instrument using the vibrations set up in plastic rods by stroking longitudinally. - [SQUEEGY K](https://barthopkin.com/squeegy-k/) - [CUBIST BASS](https://barthopkin.com/instrumentarium/cubist-bass/) - [SUCTION POPS](https://barthopkin.com/instrumentarium/suction-pops/) - Musical instrument that works like a pop gun in reverse: a tuned set of tubes sounded by pulling out a plunger for a sound like popping a champaign bottle. - [Needs-a-Name](https://barthopkin.com/instrumentarium/needs-a-name/) - [Narrow Trillium](https://barthopkin.com/narrow-trillium/) - [MANY-BELLED KELP HORN](https://barthopkin.com/instrumentarium/many-belled-kelp-horn/) - [AQUAALT](https://barthopkin.com/instrumentarium/aquaalt/) - [WEIGHTED STRINGS](https://barthopkin.com/instrumentarium/weighted-strings/) - [Scrape Because](https://barthopkin.com/scrape-because/) - [ABOUT](https://barthopkin.com/about/) - About Bart Hopkin, musician and instrument designer, inventor. - [Slap Tubes and Other Plosive Aerophones](https://barthopkin.com/books-cds/slap-tubes-and-other-plosive-aerophones/) - The category of musical instruments known as plosive aerophones includes the end-struck tubes sometimes called slap tubes, as well as many other instrument types. These instruments can be simple to make, yet they are fully musical and they sound great. This book tells you everything you need to know to make them, with ready-to-build designs as well as the information you need to design your own. - [Musical Instrument Design](https://barthopkin.com/books-cds/musical-instrument-design-2/) - A key resource for anyone interested in musical instrument making. It provides an overview of acoustic instrument design principles for acoustic instruments of all sorts loads of practical, hands-on information, generously illustrated. - [Play Hear](https://barthopkin.com/play-hear/) - [SOUND INVENTIONS: Selected Articles from Experimental Musical Instruments](https://barthopkin.com/books-cds/sound-inventions-selected-articles-from-experimental-musical-instruments/) - [SOUNDIRON LAMELLAPONES COLLECTION](https://barthopkin.com/books-cds/soundiron-lamellapones-collection/) - [MIAGO TROD](https://barthopkin.com/books-cds/miago-trod/) - [...U...](https://barthopkin.com/books-cds/u-2/) - [SOUND INVENTIONS](https://barthopkin.com/books-cds/sound-inventions/) - [Balloon Drums](https://barthopkin.com/balloon-drums/) - [CAT’S FACE](https://barthopkin.com/instrumentarium/cats-face/) - [BRANCHING CORRUGAHORN](https://barthopkin.com/instrumentarium/branching-corrugahorn/) - [FLOATING BRIDGE GUITAR](https://barthopkin.com/instrumentarium/floating-bridge-guitar/) - [Elastic Guitar](https://barthopkin.com/elastic-guitar/) - [WOBBLE STEEL GUITAR](https://barthopkin.com/instrumentarium/wobble-steel-guitar/) - A guitar-like instrument which uses the shifting resonances of a flexing sheet-steel soundboard to color the tone. - [Deep Guitar](https://barthopkin.com/instrumentarium/deep-guitar/) - [Smoked Paprika](https://barthopkin.com/smoked-paprika/) - [WHAT-A-SHAME](https://barthopkin.com/instrumentarium/what-a-shame/) - [Y-STRING GUITAR](https://barthopkin.com/instrumentarium/y-string-guitar/) - [Retronome](https://barthopkin.com/instrumentarium/retronome/) - [Petaloom](https://barthopkin.com/instrumentarium/petaloom/) - [TANGULAR ARC](https://barthopkin.com/tangular-arc/) - [T-ROD-ON-TINE](https://barthopkin.com/t-rod-on-tine/) - [MiagoTrod](https://barthopkin.com/miagotrod/) - [Square Boos](https://barthopkin.com/square-boos/) - [STRING LATTICE GUITAR](https://barthopkin.com/instrumentarium/string-lattice-giutar/) - [Tin with Tines](https://barthopkin.com/tin-with-tines/) - [MISCELLANEOUS DRUMS](https://barthopkin.com/instrumentarium/miscellaneous-drums/) - [CHORD CHIMES](https://barthopkin.com/instrumentarium/chord-chimes/) - [QUARTER-INCH](https://barthopkin.com/instrumentarium/quarter-inch/) - [XYLOPHONES AND METALOPHONES](https://barthopkin.com/instrumentarium/xylophones-and-metalophones/) - [Dipping Chimes](https://barthopkin.com/instrumentarium/dipping-chimes/) - [BUS STOP K](https://barthopkin.com/instrumentarium/bus-stop-k/) - [Funny Noises for the Connoisseur](https://barthopkin.com/books-cds/funny-noises-for-the-connoisseur/) - This book, with its accompanying audio CD, is about comical sounds and how to make them. Squishy sounds and gloopy sounds, farting sounds and belching sounds, laughing sounds and crying sounds, crazy-bad musical instrument sounds, Martians conversing, morticians giggling, etc., etc. - [Experimental Musical Instruments, Later Years](https://barthopkin.com/books-cds/experimental-musical-instruments-later-years/) - Later Years is the second of the pair of CDs containing selections from the Experimental Musical Instruments annual audio cassette series that ran from 1985 – 1999. (The first, called Early Years is described above.) Later Years covers the years from 1993-1999, featuring 17 different instrument makers in all their diversity, inventiveness and originality. - [Experimental Musical Instruments, Early Years (Audio CD)](https://barthopkin.com/books-cds/experimental-musical-instruments-early-years-audio-cd/) - Early Years is the first of a pair of CDs containing selections from the Experimental Musical Instruments annual audio cassette series that ran from 1985 – 1999. - [Getting a Bigger Sound](https://barthopkin.com/books-cds/getting-a-bigger-sound/) - Pickups and Microphones for your Musical Instrument - [Wind Chimes: Design and Construction](https://barthopkin.com/books-cds/wind-chimes-design-and-construction/) - Complete how-to information on the making of this most accessible of instruments. Descriptions, photos and and sounds of a great many diverse types, from the familiar to the very unusual. - [Making Marimbas and Other Bar Percussion Instruments](https://barthopkin.com/books-cds/making-marimbas/) - How to make bar percussion instruments of all sort, including marimbas and related instruments with sounding bars of wood, metal, bamboo, and other materials. - [MAKING LAMELLAPHONES](https://barthopkin.com/books-cds/making-lamellaphones/) - Lamellaphones are musical instruments like those pictured on this book’s cover, in the family of mbira, kalimba, and countless related forms. In this book are plans and ideas for a large and wonderfully diverse variety of lamellaphones ranging from simple to sophisticated, and traditional to far out. - [Nice Noise: Preparations and Modifications for Guitar](https://barthopkin.com/books-cds/nice-noise/) - This is a book of book modifications, preparations and extensions you can use with acoustic and electric guitars. The focus is not on electronic effects; it’s on things you can do physically to alter the ways the strings vibrate or the soundboard projects. Whatever type or style of guitar you play – acoustic or electric; classical, jazz, rock, avant-garde or other – this book will show you new and unexpected ways to play it. More Details - [WOODENTINE Sample Library](https://barthopkin.com/books-cds/woodentine-sample-library/) - SoundIron's sample library featuring sounds of wooden tine instruments made by Bart Hopkin, second in their Instrumentarium Hopkinis series. - [RUMBA BOXES Sound Library](https://barthopkin.com/books-cds/rumba-boxes-sound-library/) - Samples Library form SoundIron: Rumba Boxes feartures sounds of two bass kalimbas/cajons made by Bart Hopkin - [Hopkin Instrumentarium: MetalTines](https://barthopkin.com/books-cds/hopkin-instrumentarium-metaltines/) - Sound Samples library fro SoundIron: MetalTines, the sounds of metal lamellaphones created by Bart Hopkin - [RATTLETINES](https://barthopkin.com/books-cds/rattletines/) - Sound Library from SoundIron: Rattletines -- sounds of three lamellaphones with rattles, buzzes and hammering effects. - [Rattletine 3](https://barthopkin.com/rattletine-3/) - [Funny Noises](https://barthopkin.com/funny-noises/) - [Children’s Instruments](https://barthopkin.com/childrens-instruments/) - [Arbie McCone](https://barthopkin.com/arbie-mccone/) - [OSTRICH OCARINA](https://barthopkin.com/instrumentarium/ostrich-ocarina/) - [STAMPING TUBES](https://barthopkin.com/instrumentarium/stamping-tubes/) - [OUTRAGEOUS TROMBONE BELL](https://barthopkin.com/outrageous-trombone-bell/) - [PERIODIC SNIP FLUTE](https://barthopkin.com/instrumentarium/periodic-snip-flute/) - [POLLY](https://barthopkin.com/instrumentarium/polly/) - [CALENDAR](https://barthopkin.com/calendar/) - [TINES & ECHOES](https://barthopkin.com/books-cds/tines-echoes/) - [BOWED PSALTERY](https://barthopkin.com/instrumentarium/bowed-psaltery/) - [Sit or Play](https://barthopkin.com/sit-or-play/) - [HARMONOCHORD](https://barthopkin.com/harmonochord/) - [Upright Bong-Tones](https://barthopkin.com/upright-bong-tones/) - [Experimental Musical Instruments Complete Back Issues on CD-ROM](https://barthopkin.com/books-cds/experimental-musical-instruments-complete-back-issues-on-cd-rom/) - Experimental Musical Instruments Complete Back Issues on CD-ROM 70 Issues, 1985-1999, on two CDs All 70 issues of the late, great Experimental Musical Instruments journal, 1985-1999, on two CD-ROMs in Adobe .pdf format - [BOOTOO](https://barthopkin.com/instrumentarium/bootoos/) - [Zither with Tailpieces](https://barthopkin.com/instrumentarium/alt-zither-wtailpieces/) - [POP GUNS](https://barthopkin.com/instrumentarium/pop-guns/) - [TAILPIECES](https://barthopkin.com/instrumentarium/tailpieces/) - [COOKERY HARP](https://barthopkin.com/instrumentarium/cookery-harp/) - [BELL TREE](https://barthopkin.com/instrumentarium/bell-tree/) - [BASS CAT’S FACE](https://barthopkin.com/instrumentarium/bass-cats-face/) - [EXPERIMENTAL MUSICAL INSTRUMENTS ~Back Issues](https://barthopkin.com/experimental-musical-instruments-back-issues/) - [TRILLIUM HARP](https://barthopkin.com/instrumentarium/trillium-harp/) - [FLOATING ZITHERS](https://barthopkin.com/instrumentarium/floating-zithers-2/) - [RATTLE GUITAR AND DAMPED GUITAR](https://barthopkin.com/instrumentarium/rattle-guitar-and-damped-guitar/) - [Bossas, Ballads and Blues](https://barthopkin.com/books-cds/bossas-ballads-and-blues/) - It’s not a combination one often hears, but clarinet and classical guitar is a marriage made in heaven. On this CD clarinetist Dale Polissar plays twelve tunes, mostly but not exclusively standards, accompanied by Bart Hopkin. - [Making Musical Instruments with Kids](https://barthopkin.com/books-cds/making-musical-instruments-with-kids/) - This book, with its accompanying audio CD, is a treasure trove of musical instrument ideas simple enough for children to make. It’s written primarily for adults who work with children, including teachers, parents, and others involved in the lives of young people. - [Aloft at Last](https://barthopkin.com/books-cds/aloft-at-last/) - From an archive of recordings spanning several decades, Bart Hopkin has selected some of his very nicestbestmostinteresting pieces for this CD. Included are instrumental pieces and songs, musically adventurous but not esoteric or avant-garde. - [Air Columns and Toneholes: Principles for Wind Instrument Design](https://barthopkin.com/books-cds/air-columns-and-toneholes-principles-for-wind-instrument-design/) - A booklet containing theory and how-to on these aspects of wind instrument design, starting with a not-too-demanding generalist’s approach and working its way through to a more exacting mathematical approach. - [After Seven Years](https://barthopkin.com/books-cds/after-seven-years/) - [FLOATING GUITAR](https://barthopkin.com/instrumentarium/floating-guitar/) - [FLOATING ZITHERS](https://barthopkin.com/instrumentarium/floating-zithers/) ## Categories - [Uncategorized](https://barthopkin.com/category/uncategorized/) - [Essays](https://barthopkin.com/category/essays/) ## Tags - [rubber band strings](https://barthopkin.com/tag/rubber-band-strings/) - [elastic strings](https://barthopkin.com/tag/elastic-strings/) - [musical strings](https://barthopkin.com/tag/musical-strings/) - [musical instrument strings](https://barthopkin.com/tag/musical-instrument-strings/) - [musical instrument categorization](https://barthopkin.com/tag/musical-instrument-categorization/) - [hornbostel-sachs](https://barthopkin.com/tag/hornbostel-sachs/) - [magnetic pickups](https://barthopkin.com/tag/magnetic-pickups/) - [electromagnitic pickups](https://barthopkin.com/tag/electromagnitic-pickups/) - [guitar pickups](https://barthopkin.com/tag/guitar-pickups/) - [Palindromes](https://barthopkin.com/tag/palindromes/) - [sound sample libraries](https://barthopkin.com/tag/sound-sample-libraries/) - [sample libraries](https://barthopkin.com/tag/sample-libraries/) - [experimental musical instruments](https://barthopkin.com/tag/experimental-musical-instruments/) - [Bart Hopkin](https://barthopkin.com/tag/bart-hopkin/) - [impedance](https://barthopkin.com/tag/impedance/) - [acoustic impedance](https://barthopkin.com/tag/acoustic-impedance/) - [overtones](https://barthopkin.com/tag/overtones/) - [modes of vibration](https://barthopkin.com/tag/modes-of-vibration/) - [musical instrument design](https://barthopkin.com/tag/musical-instrument-design/) - [prime tone](https://barthopkin.com/tag/prime-tone/) - [harmonicity](https://barthopkin.com/tag/harmonicity/) - [reed pipe](https://barthopkin.com/tag/reed-pipe/) - [beating reeds](https://barthopkin.com/tag/beating-reeds/) - [musical instrument names](https://barthopkin.com/tag/musical-instrument-names/) - [Savart's Wheel](https://barthopkin.com/tag/savarts-wheel/) - [musical siren](https://barthopkin.com/tag/musical-siren/) - [noise pollution](https://barthopkin.com/tag/noise-pollution/) - [silence](https://barthopkin.com/tag/silence/) - [sound sculpture](https://barthopkin.com/tag/sound-sculpture/) - [sound installation](https://barthopkin.com/tag/sound-installation/) - [interactive sound](https://barthopkin.com/tag/interactive-sound/) - [wind instruments. tone holes;](https://barthopkin.com/tag/wind-instruments-tone-holes/) - [gongs](https://barthopkin.com/tag/gongs/) - [disk gongs](https://barthopkin.com/tag/disk-gongs/) - [aluminum gongs](https://barthopkin.com/tag/aluminum-gongs/) - [partials](https://barthopkin.com/tag/partials/) - [fundamental](https://barthopkin.com/tag/fundamental/) - [tone quality](https://barthopkin.com/tag/tone-quality/) - [timbre](https://barthopkin.com/tag/timbre/) - [harmonic series](https://barthopkin.com/tag/harmonic-series/) - [harmonic](https://barthopkin.com/tag/harmonic/) - [inharmonic](https://barthopkin.com/tag/inharmonic/) - [friction instruments](https://barthopkin.com/tag/friction-instruments/) - [wave organ](https://barthopkin.com/tag/wave-organ/) - [agitation flute](https://barthopkin.com/tag/agitation-flute/) - [thunder tube](https://barthopkin.com/tag/thunder-tube/) - [thunder drum](https://barthopkin.com/tag/thunder-drum/) - [sad aggie](https://barthopkin.com/tag/sad-aggie/) - [gurgle organ](https://barthopkin.com/tag/gurgle-organ/) - [scraper flute](https://barthopkin.com/tag/scraper-flute/) - [names for musical instruments](https://barthopkin.com/tag/names-for-musical-instruments/) - [Felix Savart](https://barthopkin.com/tag/felix-savart/) - [forced vibration](https://barthopkin.com/tag/forced-vibration/) - [angular wave form](https://barthopkin.com/tag/angular-wave-form/) - ['Moe](https://barthopkin.com/tag/moe/) - [clarinet](https://barthopkin.com/tag/clarinet/) - [pitch control](https://barthopkin.com/tag/pitch-control/) - [tone holes](https://barthopkin.com/tag/tone-holes/) - [register holes](https://barthopkin.com/tag/register-holes/) - [single reed mouthpiece](https://barthopkin.com/tag/single-reed-mouthpiece/) - [single reed mouthpiece lay](https://barthopkin.com/tag/single-reed-mouthpiece-lay/) - [Bart Hopkin animations](https://barthopkin.com/tag/bart-hopkin-animations/) - [Cory Sheldon](https://barthopkin.com/tag/cory-sheldon/) - [tubulon](https://barthopkin.com/tag/tubulon/) - [aluminum tube marimba](https://barthopkin.com/tag/aluminum-tube-marimba/) - [84-equal](https://barthopkin.com/tag/84-equal/) - [84-tone equal temperament](https://barthopkin.com/tag/84-tone-equal-temperament/) - [stainless steel resonator](https://barthopkin.com/tag/stainless-steel-resonator/) - [SoundIron](https://barthopkin.com/tag/soundiron/) - [Floppy Bands; spring steel bands; Bands and Bars](https://barthopkin.com/tag/floppy-bands-spring-steel-bands-bands-and-bars/) - [siren](https://barthopkin.com/tag/siren/) - [forced vibration instruments](https://barthopkin.com/tag/forced-vibration-instruments/) - [Aaron Soloway](https://barthopkin.com/tag/aaron-soloway/) - [Ian Saxton](https://barthopkin.com/tag/ian-saxton/) - [harmonics](https://barthopkin.com/tag/harmonics/) - [chimes](https://barthopkin.com/tag/chimes/) - [acoustics](https://barthopkin.com/tag/acoustics/) - [audible frequency range](https://barthopkin.com/tag/audible-frequency-range/) - [Coil Spring Instruments](https://barthopkin.com/tag/coil-spring-instruments/) - [tubular chimes](https://barthopkin.com/tag/tubular-chimes/)