Rock-a-Doodle 'n Coo", "Back to the Country", and "Tyin' Your Shoes" contained background vocals by The Jordanaires, who were also known for backing up Elvis. A novelization of the film, written by Don Bluth and Chip Lovitt, was published by Troll Communications LLC (). The film also inspired a Computerized Coloring Book by Capstone Software and IntraCorp called "The Rock-A-Doodle Computerized Coloring Book". Rock-a-Doodle Rock-a-Doodle is a 1991 Irish/British/American live action/animated musical comedy film produced by Sullivan Bluth Studios and Goldcrest Films. Loosely based on Edmond Rostand's comedy "Chantecler", "Rock-a-Doodle" was directed by Don Bluth and written by David N. Weiss.
Backing vocalist and even developing highly complex harmonies and arrangements. When they perform live, they may have backing vocalists who impersonate their voices. Some bands use backing vocals in order to contrast with the lead singer who may be performing an unusual vocal technique. For example, Brian "Head" Welch, the lead guitarist of the band Korn, performed backing vocals on several songs, and notably on the song "Ball Tongue", he screams the chorus while lead vocalist Jonathan Davis sings incomprehensible scat vocals. Similarly, the Canadian deathcore group Despised Icon uses two vocalists, one performing screams and another performing low, growling death grunts