Susan's Rocky Horror Reprise

haha i watched the commentary with John turturro and his son Amedeo last night when Sarandon sings peice of my heart John says its Susan's Rhps reprise lol
he also said she worked very hard on it which i think implys that imdb is wrong about her voice being dubbed!!

Susan:I think I stay an actor b'cuz you can't get it right.So there is a challenge to it.