Louis, Gunn founded a band, The Icons, in 1989, serving as lead vocalist. The group released the album Mom, We Like It Here on Earth in 1994, and its songs 'Sunday' and 'Walking Naked' were featured in the film Tromeo and Juliet. Gunn has continued to work in music, composing songs for Scooby-Doo, Scooby-Doo 2: Monsters Unleashed, and Movie 43.