Boi-Ngo was the third Oingo Boingo album to be self-produced by Danny Elfman and Steve Bartek (including So-Lo).

[1][better source needed] An earlier song, "Cinderella Undercover", first performed in 1981, was also recorded but cut from release.

[citation needed] "Mama" saw a limited release on a 7-inch vinyl box set edition of Boi-Ngo as the album's final track.

New recordings of both "Cinderella Undercover" and "Mama" were subsequently featured on the "live in the studio" album Boingo Alive in 1988.

The song "Happy" was also recorded in the album sessions for release on the Summer School soundtrack, under Danny Elfman's name.