a kind of small band consisting of string instruments, as guitars or mandolins, with harmonicas, kazoos, and such household items as a washtub and washboard for percussion and an empty jug that produces bass notes when the performer blows across its mouth
Jug band. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/jug-band
(plural jug bands)
(music) Especially in the U. S., a group of rusticmusicians, specializing in bluegrass or folk music, whose instruments include empty jugs, bottles, and similar containers of various sizes which produce musical sounds when the player blows across the openings at the tops of their necks.
English Wiktionary. Available under CC-BY-SA license.