In 1975, Patrick left acting to work for his father and began to learn to play the bass guitar. In 1983, he recorded the song, "Whatever Happened To Eddie?" (b/w "Little Monsters"), with several instrumentalists and backup singers under the group name "Eddie and the Monsters." Set to the tune of the "Munsters" theme, the song details his life as a Munster. ("You might wonder why I have a dragon for a pet—well, he's just there to keep me company on the set.") He recorded a second single, "It's Only Halloween", which was released on Park Lane Drive Records in 2007.