This was on Cliff Fabri's To view the link you have to Register :
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you have the short extract at the beginning that we've never heard before, does someone know the name of the song, and the artist? and then at 4:13, an old version of Tomorrow, but... is it Samantha Moore who sings with Avril?? i think she does the chorus and Avril the verses but i'm not sure... what do you think?