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In page Wild Honey Pie:

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"Wild Honey Pie" was recorded on 20 August 1968 at the end of the recording session for "Mother Nature's Son".[1] Like "Mother Nature's Son", McCartney is the sole performer on the recording.[2][3][4] At the time, John Lennon and Ringo Starr were working on other White Album songs, and George Harrison was on holiday in Greece.[3] McCartney also recorded the unreleased song "Etcetera" during this session.[1]