Jug (instrument) Jug (instrument) The jug used as a musical instrument is an empty jug (usually made of glass or stoneware) played with buzzed lips to produce a trombone-like tone. The characteristic sound of the jug is low and hoarse, below the higher pitch of the fiddle, harmonica, and the other instruments in the band. With an embouchure like that used for a brass instrument, the musician holds the mouth of the jug about an inch from their mouth and emits a blast of sound, made by a buzzing of the lips, directly into it. The jug does not touch the musician's
Brass instrument valve Brass instrument valve Brass instrument valves are valves used to change the length of tubing of a brass instrument allowing the player to reach the notes of various harmonic series. Each valve pressed diverts the air stream through additional tubing, individually or in conjunction with other valves. This lengthens the vibrating air column thus lowering the fundamental tone and associated harmonic series produced by the instrument. Valves in brass instruments require regular maintenance and lubrication to ensure fast and reliable movement. The first piston-valved musical instruments were developed just after the start of the 19th century. The Stölzel valve (invented