Blown bottle

Further information: Jug (instrument)

A blown bottle is a musical instrument that produces sound when the musician blows air over the bottle opening.^[1][2]

People blowing over bottles to produce a note.

Notes produced by blowing over bottles

Blown bottles generate sound by utilizing a vibrating column of air.^[3] The bottles may be tuned by adding water or sand to the vessel.^[4]

Blown bottles, like the musical jug, are sometimes used by performers of folk music.^[5] The blown bottle is assigned to note number 76 (or 77, for numbering starting with 1) in the General MIDI specification.^[6]