Avril Lavigne

Avril Lavigne spent much of 2006 enjoying her new marriage to Sum 41 frontman Deryck Whibley (they tied the knot in July). But somewhere in there she found time to cut this epic theme song for the fantasy adventure flick Eragon. Coproduced by Dr. Luke, of "Since U Been Gone" fame, this tune is fit for a tale of knights and wizards, featuring a swirling chorus beset with strings, ringing guitars and Lavigne's triumphant order to "keep holding on/ 'Cause you know I'll make it through." Take that, fire-breathing dragons!