Frumious Bandersnatch was a short-lived but influential psychedelic rock band from San Francisco, active between 1967 and 1969. Known for their lush harmonies, experimental guitar work, and vivid live performances, the group became a staple of the Bay Area’s late-’60s counterculture scene. Though they never released a full-length album, members of the band later joined notable acts such as the Steve Miller Band and Journey, leaving a lasting imprint on the evolution of West Coast rock.