Complex sentence: "Back Door Man" is a blues song written by Willie Dixon for Howlin'Wolf, released by Chess Records as a B-side to Wolf's "Wang Dang Doodle" in 1961 (catalog no.1777).
Split into simpler sentences: Back Door Man is a blues song written by Willie Dixon and recorded by Howlin'Wolf in 1961. It was released by Chess Records as the B-side to Wolf's "Wang Dang Doodle" (catalog no.1777).