Mark McGann's elder brother Paul McGann later played the Eighth Doctor in Doctor Who (1996) while Peter Capaldi later played the Twelfth Doctor in Doctor Who (2005).
The music played during John's alcoholic breakdown is "What You Got," which was recorded for the album Wallls And Bridges. Walls And Bridges was not recorded with Phil Spector in Los Angeles but back in New York City after Spector absconded with the master tapes for the Rock 'n' Roll album. While technically part of John's "lost weekend" the recording of Walls And Bridges went far more smoothly and professionally than the chaotic Spector sessions.
English