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Let's Get It On is the thirteenth studio album by American singer and songwriter Marvin Gaye. It was released on August 28, 1973, by Tamla Records. Recording sessions for the album took place during June 1970 to July 1973 at Hitsville U.S.A. and Golden World Studio in Detroit, and at Hitsville West in Los Angeles.

Gaye proceeded to record some more politically conscious material at the Golden World Records studio, known as Motown's Studio B, as well as the preliminary vocals and instrumentation for some of the material to be featured on Let's Get It On. Following the earlier sessions in Detroit at Golden World, Gaye recorded at Hitsville West in Los Angeles from February to July 1973. Accompanied by an experienced group of session musicians called The Funk Brothers, who had contributed to Gaye's What's Going On, and received their first official credit, Gaye recorded the unreleased songs "The World is Rated X" and "Where Are We Going" and the single "You're the Man" (1972) at Golden World. "Where Are We Going" was later covered by trumpeter Donald Byrd. Gaye had planned the release of an album titled You're the Man, but it was later shelved for unknown reasons. The songs that were to be included on it, along with other unreleased recordings from Hitsville West and Golden World, were later featured on the 2001 re-release of Let's Get It On.  The album's first recording, "Let's Get It On", was composed by Gaye with friend and former Motown label mate Ed Townsend. It was originally written by Gaye as a religious ode to life, but Motown singer-songwriter Kenneth Stover re-wrote it as a more political first draft. Upon hearing Gaye's preliminary mix of Stover's draft, Townsend protested and claimed that the song would be better suited with sexual and romantic overtones, particularly "about making sweet love." Gaye and Townsend rewrote the song's lyrics together with the original arrangements and musical accompaniment of the demo intact. The lyrics were inspired by Janis Hunter, whom Gaye had become infatuated with after meeting each other through Ed Townsend during the initial sessions. Townsend has cited Hunter's presence during the album's recording as an inspiration for Gaye. Gaye's intimate relationship with Hunter subsequently became the basis for his 1976 album I Want You. While recording the title track, he was inspired to revive unfinished recordings from his 1970 sessions at the Hitsville U.S.A. Studio.  Townsend assisted Gaye with producing the rest of the album, whose recording took place at several sessions throughout 1970 to 1973. They worked on four songs together, including the ballad "If I Should Die Tonight", while Gaye composed most of the other songs, including those from past sessions. "Just to Keep You Satisfied" was originally recorded by several Motown groups, including The Originals and The Monitors, as a song dedicated to long-standing love. With re-recording the song, he had re-written the arrangement and lyrics to address the demise of his volatile marriage to Anna Gordy Gaye, who happened to be the original song's co-writer. The background vocals for the album were sung by Gaye, with the exception of "Just to Keep You Satisfied", which were done by The Originals. Most of the instrumentation for the album was done by members of The Funk Brothers, including bassist James Jamerson, guitarists Robert White and Eddie Willis, and percussionist Eddie "Bongo" Brown. Gaye also contributed on piano during the sessions.
Let's Get It On