There are approximately 250 musical instruments in the collection.
Including upright pianos, square pianos, grand pianos, harmoniums, Dulcitone, Weber Duo-art reproducing piano
Including staff bells, metal marimba, wooden marimbas, xylophones, tuned glasses , mallets
Including harp, harp guitar, guitars, ukuleles, viol, violin
Including clarinets, oboes, flute, fife, slide whistles, sarrusophones, saxophone, trombones
Including didjeridoo, clapping sticks, auto-zither, ban hu, gong, yueh ch'in (moon guitar), san hsien, yang chin, rabâb, drums, kerar, sansa, maracas
Accordion, concertina, Theremin
Experimental wooden wind and string instruments made and designed by Ludwig Hirschfeld-Mack, Weimar Bauhaus trained artist and teacher
Percy Grainger's Experimental Free Music Machines ('Tone-Tools'):
Including Butterfly Piano (prepared child's piano), Reed-Box Tone-Tool, “Kangaroo-Pouch” Tone-Tool, prepared piano roll for Grainger's composition Sketches for Sea Song, Sliding Pipe “Free Music" invention.