‘Moe flute uses the same pitch-control principal as the original ‘moe, which is a clarinet. This involves a flexible magnetic strip positioned over an open slit running the length of the instrument. Normally the strip angles up and away, but when you press it down it covers some portion of the slit, depending where you press. This is like covering tone holes in a standard instrument, except that you can press anywhere in the pitch continuum, or glissando all you want. Because the edge of the slit is lined in steel, the magnetic strip seals leaklessly over the slit when pressed. ‘Moe flute uses a tenor recorder mouthpiece.
A video of this instrument can be found among the demonstrations in this youtube playlist.