To celebrate Billy Sherwood's 60th birthday, we take a dip into the chronology of one of the bands he's been in, CIRCA: Every lineup has featured Billy Sherwood and Tony Kaye, and other faces involved over the years include Alan White, Jimmy Haun, Jay Schellen, Johnny Bruhns, Ronnie Ciago, Scott Connor, and Rick Tierney. Hear what we have to say about the history and the music.