Before Alan Parsons worked with Pink Floyd on The Dark Side of the Moon, he served his apprenticeship recording Pinky and Perky. Session players would deliver slowed-down versions of the songs. The vocals were recorded on a tape running at half-speed, which would then be played at double-speed to create Pinky and Perky’s distinctive voices. Thus, P+P classics such as Can’t Buy Me Love, All My Loving and She Loves You were born.