Spomo is a mouth organ with a harmonica-style mouthpiece. Each of the blow holes in the mouthpiece leads to a plastic flex-pipe, which in turn leads to a stopped pipe tuned to the appropriate note. Two versions of the instrument are shown here, one with twelve pipes tuned diatonically and one with thirty-one tuned chromatically. The smaller one uses cheap plastic slide whistles tuned by gluing the stopper in place for the intended note. The larger one uses handmade mouthpieces modeled after tenor recorder mouthpieces through most of the range, complemented by store-bought plastic mouthpieces on the higher notes. These mouthpieces are attached to stopped pipes of varying lengths.

In the recording, the 31-note spomo-lo (the larger version of the instrument) is accompanied by guitar. 

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