OK, has mel left the thread?
I know one that shoudn't bring her running back in
Avril Lavignes acoustic cover of Cyndi Lauers Time afterTime is an absolute corker. I like the original but Avrils is brilliant!
Another one is Tommy Knockers - New Horizon, it's not strictly a cover it's a danced up version of John Parr's St Elmos Fire but thats a corker too
