<P> Michael McDonald as himself ( the track `` Eyes of a Child '' ) and as Satan 's high notes in `` Up There '' , and Howard McGillin provides Gregory 's singing voice in `` La Resistance ( Medley ) '' . Stewart Copeland , former drummer for The Police , guests as an American soldier . Mike Judge , creator and voices of Beavis and Butt - head , King of the Hill and The Goode Family , provides Kenny 's voice in his sole speaking appearance at the end of the film . Although initially denied by Paramount , Metallica lead singer James Hetfield said in 2001 that he provides vocals for the track `` Hell Is n't Good '' . </P>
<P> Michael McDonald as himself ( the track `` Eyes of a Child '' ) and as Satan 's high notes in `` Up There '' , and Howard McGillin provides Gregory 's singing voice in `` La Resistance ( Medley ) '' . Stewart Copeland , former drummer for The Police , guests as an American soldier . Mike Judge , creator and voices of Beavis and Butt - head , King of the Hill and The Goode Family , provides Kenny 's voice in his sole speaking appearance at the end of the film . Although initially denied by Paramount , Metallica lead singer James Hetfield said in 2001 that he provides vocals for the track `` Hell Is n't Good '' . </P>
who sings the hell song in the south park movie
who sings the hell song in the south park movie
Metallica lead singer James Hetfield
Metallica lead singer James Hetfield