Lady Gaga's duet with Bradley Cooper in A Star Is Born is “Shallow.” The song is performed by Gaga's character, Ally, and Cooper's character, Jackson Maine, during one of the film's defining concert scenes.
Released on September 27, 2018, “Shallow” was the lead single from the film's soundtrack. It begins with Cooper singing the opening verses before Gaga joins him, building into the song's famous high-powered chorus. The lyrics question whether the characters are satisfied with life on the surface or want something deeper.
Gaga co-wrote the song with Mark Ronson, Anthony Rossomando, and Andrew Wyatt. Its sound combines elements of folk-pop, country, rock, and a traditional power ballad. The performance was recorded with a live audience at Los Angeles's Greek Theatre, helping the film sequence feel like a genuine concert.
Several other Gaga-Cooper songs appear in the movie, including “Music to My Eyes,” “Diggin' My Grave,” and “I Don't Know What Love Is.” That is why “Shallow” is sometimes confused with another soundtrack duet, but it is the signature collaboration and the film's best-known song.