The Beatles complete the sessions for Sgt. Pepper’s Lonely Hearts Club Band at Abbey Road. The final recordings are a short section of gibberish and noise which are to follow ‘A Day in the Life’, in the run-out groove. They record assorted noises and voices, which engineer Geoff Emerick cuts up and randomly re-assembles backwards. At John Lennon’s suggestion, they also add a high-pitch 15 kilocycle whistle audible only by dogs. These are omitted from the American version of the album.