This is an instrumental cover of the song... It's one of my best covers, methinks. Took me a long time to do, and I think it turned out quite well :) Lots of harmonies! It's a bit messy, though.

Take it easy on her, she likes Britney Spears :p and she didn't get to pick the key ;) If she was an octave down she'd be able to handle it better, but it was a one-take thing!