was not a Lennon–McCartney composition. It was also the first Beatles single from an album already released in the UK. Apple's Neil Aspinall filmed a promotional video, which combined separate footage of the Beatles and their wives. "Maxwell's Silver Hammer" "Maxwell's Silver Hammer", McCartney's first song on the album, was first performed by the Beatles during the Let It Be sessions (as seen in the film). He wrote the song after the group's trip to India in 1968 and wanted to record it for the White Album, but it was rejected by the others as "too complicated". The recording was fraught with tension between band members, as McCartney annoyed others by insisting on a perfect performance. The track was the first Lennon was invited to work on following his car accident, but he hated it and declined to do so. According to engineer Geoff Emerick, Lennon said it was "more of Paul's granny music" and left the session. He spent the next two weeks with Ono and did not return to the studio until the backing track for "Come Together" was laid down on 21 July. Harrison was also tired of the song, saying "we had to play it over and over again until Paul liked it. It was a real drag". Starr was more sympathetic to the song. "It was granny music", he admitted, "but we needed stuff like that on our album so other people would listen to it". Longtime roadie Mal Evans played the anvil sound in the chorus. This track also makes use of Harrison's Moog synthesizer, played by McCartney. "Oh! Darling" "Oh! Darling" was written by McCartney in the doo-wop style, like contemporary work by Frank Zappa. It was tried at the Get Back sessions, and a version appears on Anthology 3. It was subsequently re-recorded in April, with overdubs in July and August. McCartney attempted recording the lead vocal only once a day. He said: "I came into the studios early every day for a week to sing it by myself because at first my voice was too clear. I wanted it to sound as though I'd been performing it on stage all week." Lennon thought he should have sung it, remarking that it was more his style. "Octopus's Garden" As was the case with most of the Beatles' albums, Starr sang lead vocal on one track. "Octopus's Garden" is his second and last