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The jug as a musical instrument reached its height of popularity in the 1920s, when jug bands, such as Cannon's Jug Stompers were popular.

The eponymous jug is just that: a jug (usually made of glass or stoneware) played with the mouth. With an embouchure like that used for a brass instrument, the musician holds the mouth of the jug about an inch from his or her 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 mouth, but serves as a resonating chamber to amplify and enrich the sound made by the musician's lips. Changes in pitch are controlled by loosening or tightening the lips, and an accomplished jugplayer might have a two octave range. Some players augment this sound with vocalizations, didgeridoo style, and even circular breathing. In performance, the jug sound is enhanced if the player stands with his back to a wall, which will reflect the sound toward the audience.

The stovepipe (usually a section of tin pipe, 3" or 4" in diameter) is played in much the same manner, with the open-ended pipe being the resonating chamber. There is some similarity to the didgeridoo, but there is no contact between the stovepipe and the player's lips.

As a bass instrument, the jug is part of the band's rhythm section, but jug solos are common. Most jug bands use a single jug player, but there are recordings of period bands that used jug sections of two or more players.

• In addition to the most common ceramic jug, containers of many different materials have been used for musical jugs (glass jugs and bottles, plastic bleach bottles, tin kerosene cans, etc.). Different materials produce different sounds, as do different sizes.

The jug is primarily an acoustic instrument, although amplified and "electric jugs" appear from time to time, and have even been used as musical props (such as in the 1960s psychedelic band 13th Floor Elevators).

In recent times, Fritz Richmond (1939-2005) was a well-known and successful jug player, and his work, found on numerous commercial recordings, provides excellent examples of jug playing.

Jugs will also produce sound at their main resonance frequency when air is blown across the top opening. This method is not used in bands, since it is relatively quiet and produces only a single pitch. It is typically used for making glass bottles whistle. A larger bottle produces a lower musical pitch while smaller ones produce higher pitches. The pitch of a bottle played in this way may be controlled by changing its volume by adding or emptying contents. Loudness is a function of the speed of the air blown across the top.

• How to Prepare and Play a Jug
• Jug Band Examples