Who's Next is the fifth studio album by the English rock band the Who, released on 2 August 1971. It developed from the aborted Lifehouse project, a multi-media rock opera conceived by the group's guitarist Pete Townshend as a follow-up to the band's 1969 album Tommy. The project was cancelled owing to its complexity and to conflicts with Kit Lambert, the band's manager, but the group salvaged some of the songs, without the connecting story elements, to release as their next album. Eight of the nine songs on Who's Next were from Lifehouse, with the lone exception being the John Entwistle-penned "My Wife". Ultimately, the remaining Lifehouse tracks would all be released on other albums throughout the next decade.

Glyn Thomas Johns is an English recording engineer and record producer. He has worked with many of the most famous rock recording acts from both the UK and abroad, such as the Rolling Stones, the Beatles, the Who, Led Zeppelin, the Kinks, Eagles, Bob Dylan, the Band, Eric Clapton, the Clash, the Steve Miller Band, Small Faces, the Ozark Mountain Daredevils and Joan Armatrading. Throughout his career, he has generally preferred a live, natural approach to recording in the studio, and developed a method of recording drums sometimes referred to as the "Glyn Johns method".