A jug band is a band employing a jug player and a mix of conventional and homemade instruments. These homemade instruments are ordinary objects adapted to or modified for making sound, like the washtub bass, washboard, spoons, bones, stovepipe, jew's harp, and comb and tissue paper. The term jug band is loosely used in referring to ensembles that also incorporate homemade instruments but that are more accurately called skiffle bands, spasm bands, or juke bands because they do not include a jug player.

The washtub bass, or gutbucket, is a stringed instrument used in American folk music that uses a metal washtub as a resonator. Although it is possible for a washtub bass to have four or more strings and tuning pegs, traditional washtub basses have a single string whose pitch is adjusted by pushing or pulling on a staff or stick to change the tension.