Paul McCartney watches experimental music in London

The Beatles each pursued individual projects and outside interests during the late summer of 1966. On this evening Paul McCartney attended a performance of experimental music at the Royal College of Art in London.

The performers were the group AMM, who at the time were joined by composer Cornelius Cardew. The audience, which numbered fewer than 20 people, was invited to participate, and McCartney made occasional sounds using a radiator and beer mug.