American psychedelic rock band from San Francisco, CA. During the late 1960s, the band (along with ) epitomized San Francisco's Haight-Ashbury culture. The band began in 1965 when singer met guitarist . They began as a folk-rock group, added lead guitarist , drummer , singer , and bassist , who was soon replaced by . The group was signed by , and their debut album charted (#128), selling 10,000 copies in the San Francisco area. Anderson left to have a baby and was replaced by , Spence left to form and was replaced by , which began the group's definitive lineup.