Many of The Who's songs, especially songs from Who's Next and Quadrophenia, need to have pre-recorded tapes when performed live.
Classic Albums: The Who – Who's Next is a musical documentary detailing the recording of The Who's album, Who's Next.
It features various interviews with the surviving members of the band Pete Townshend, Roger Daltrey, and John Entwistle noted writers, including Dave Marsh.
Rock Is Dead—Long Live Rock was to be produced by The Who and Glyn Johns and scheduled for release in October 1972, but although the album was nearly completed (according to Townshend) the band felt as though it sounded too much like their 1971 LP Who's Next.
After the credits, Santa is looking over his naughty list, when he looks into the camera and says "Who's Next?"