Yes are an English progressive rock band formed in London in 1968 by lead singer Jon Anderson, bassist Chris Squire, guitarist Peter Banks, keyboardist Tony Kaye, and drummer Bill Bruford. The band has undergone numerous lineup changes throughout their history, during which 20 musicians have been full-time members. Since February 2023, the band has consisted of guitarist Steve Howe, keyboardist Geoff Downes, bassist Billy Sherwood, singer Jon Davison, and drummer Jay Schellen. Yes have explored several musical styles over the years and are most notably regarded as progressive rock pioneers.