Yes

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. Yes are one of the most successful, influential, and longest-lasting progressive rock bands. They have sold more than 30 million albums worldwide.