"Unchained" is a song from Van Halen's fourth album, Fair Warning. Vocalist David Lee Roth's working title for the song was "Hit the Ground Running". The song features prominent use of the MXR M-117 flanger, which became a popular sound and spurred sales of the pedal. A preset for the flanger was also included on the EVH Flanger MXR pedal. It uses a drop-D tuning with suspended fourthchords interspersed. The song is notable for being producer Ted Templeman's only vocal contribution to the band when he says "Come on, Dave, gimme a break!" during the interlude of the song.