During 1990, music became a key aspect of the growing success of "E Street" and music videos and musical performances began to be incorporated into episodes. The band "Undercover", led by Wheels's friend JoJo (Kelley Abbey), performed in 1989 episodes, and eventually went on tour (in the storyline). Later when she returned to Westside in 1991, "The Liquidators" were the regular band performing in the show. Background music played on radio's, and on the Jukebox at "Patchett's Pacific", now included songs to promote music released on the offshoot Westside Records music label.