132 typebars, each stamped with a note — every spelling from C to B, sharps and flats, octaves 2 to 6, low notes at the base of the skull and high ones at the crown. Each hammer strikes the core and sounds its exact pitch on piano, flute, oboe or sax. D♯ and E♭ ring the same pitch.
Click a key · play your keyboard (A W S E D F T G Y H U J K = C to C, Z / X shift octave) · or play a phrase of note names.
Keyboard octave: C4