A bicycle crash in junior high left Sweeney with his jaw wired shut for six weeks, and in recovering, his sustenance was on a pawned acoustic guitar. What was he chasing? Perhaps something in a progression that led to the acquisition of a Yamaha MT-50 4-track recorder, seclusion in empty piano rooms on the campus of UC Berkeley, emerging only to host cassette release parties in his co-op; then the rabid touring and recording in some of San Francisco’s most celebrated bands (Vows...