Yes signed contract autographed by Jon Anderson, Chris Squire, Peter Banks, Tony Kaye, and Bill Bruford. 9x12 inches Yes are an English progressive rock band formed in London in 1968 by lead singer and frontman Jon Anderson, bassist Chris Squire, guitarist Peter Banks, keyboardist Tony Kaye and drummer Bill Bruford. The band has undergone numerous line-up changes throughout its history; 19 musicians have been full-time members