It wasn't a band member.

None of them. The spoken word snippets on Dark Side came from random people the band interviewed – a doorman, a few roadies, people hanging around the studio. They asked questions about madness, death, and violence, then cut the best bits into the album.

The most famous line – “I’ve been mad for fucking years” – is from Gerry O’Driscoll, the Abbey Road doorman. The other voices are similarly non-famous: a road manager, a couple of session musicians’ wives. Even the “I am not frightened