Free reed aerophone - online puzzles

A free reed aerophone is a musical instrument that produces sound as air flows past a vibrating reed in a frame. Air pressure is typically generated by breath or with a bellows. Hornbostel–Sachs number : 412.13 (a member of interruptive free aerophones). Free reed instruments are contrasted with non-free or enclosed reed instruments, where the timbre is fully or partially dependent on the shape of the instrument body, Hornbostel–Sachs number : 42 ( flute, reed, and brass ).