Who's Next is the fifth studio album by The Who, originally released in 1971. The album has its roots in the Lifehouse project, a science fiction rock opera intended as a follow-up to Tommy.The ambitious and complex project did not come to fruition at the time and instead, many of the songs written for the project were compiled onto Who's Next. The album features the singles "Baba O'Riley", "Behind Blue Eyes" and "Won't Get Fooled Again" making it one of The Who's most critical as well as commercial successful records.