The original members met in St. Louis University High School music class 330, hence the band's name. They learned to play instruments and practiced in the basement of Moll's grandmothers home. They started to get gigs at schools in St. Louis. Their musical style was later influenced by
the Specials,
Madness,
Bad Manners,
Toasters and Special Beat. Potthast has released solo work and has also started a second band, The Stitch Up, with the former
Slow Gherkin frontman, James Rickman. He also started a ska/rocksteady group called Dan P and the Bricks with former the MU330 saxophonist, Matt Knobbe. In 2018, Potthast was part of
Jeff Rosenstock's touring band. Moll, the drummer, has a side project band called Bagheera. Most members of MU330 have performed with Mike Park's
Bruce Lee Band throughout the band's history. Potthast played live with The Bruce Lee Band, for example in 2024. MU330 continues to perform live sporadically across the United States. ==Band members==