Which Doors song is a cover of a Willie Dixon blues song?

The Doors song that is a cover of a Willie Dixon blues song is “Back Door Man.” Dixon wrote the song for Howlin’ Wolf, whose recording helped establish it as a Chicago blues standard before the Doors adapted it for their debut album.

Howlin’ Wolf recorded “Back Door Man” in Chicago in 1960, with musicians including Willie Dixon on double bass, Otis Spann on piano, Hubert Sumlin on guitar, and Fred Below on drums. The title refers to a Southern expression for a lover who leaves through the back door when a married woman’s husband returns.

The Doors recorded their version for The Doors, released in 1967. Their arrangement reshaped the blues into a heavier psychedelic-rock performance, with Jim Morrison supplying the vocals and adding some lyrical changes. The song is sometimes confused with “Roadhouse Blues,” another Doors track strongly rooted in blues, but “Roadhouse Blues” is an original Doors composition.