The Beatles - yellow submarine, 1966

"The Beatles recorded "Yellow Submarine" during a period characterised by experimentation in the recording studio. After taping the basic track and vocals in late May 1966, they held a session to overdub nautical sound effects, party ambience and chorus singing, recalling producer George Martin's previous work with members of the Goons. As a novelty song coupled with "Eleanor Rigby", a track devoid of any rock instrumentation, the single marked a radical departure for the group."