Along with Newman's score, the album features an original song, "If I Didn't Have You," sung by John Goodman and Billy Crystal (voices of James P. Sullivan and Mike Wazowski, respectively).

[1] The film's end credits feature an original song, "If I Didn't Have You," composed by Newman and sung by John Goodman and Billy Crystal (voices of James P. Sullivan and Mike Wazowski, respectively).

[1] For the character Boo, Newman first wrote frightening music to express the way the monster world perceives her, while her other theme was played as a little girl going to sleep.

[1] AllMusic gave the album a three out of five star rating, saying: "As with both of the Toy Story movies and A Bug's Life, the soundtrack to Disney/Pixar's Monsters, Inc. features a fun, whimsical score by Randy Newman."

"[8] In their top ten Musical scores from Pixar, MovieWeb ranked it second and wrote: "The lively, rhythmic swing of the movie's soundtrack has a contagious energy that forces you to move.