Amy Lee - Hello

She's never performed it live

Britney Spears performing all of the song on Blackout.

Kelly Clarkson dueting with Mariah Carey.

christina and britney in a mtv show

britney start with dirrty and christina with im slave 4 u

after, christina & britney sing a hot colaboration song!

Leona Lewis - O Holy Night
She was meant to sing it in the X-Factor final but ended up doing a Take That duet instead

i would love to hear Leona Lewis sing Forgive Me & TAB live.well actualy all the songs of Spirit and even Best Kept Secret & Twilight aswell!

^^^^ Yeahh the 'Twilight' songs she sang live on that BBC interview were really good and it would be ace to hear them now her voice is more mature. TAB is the 'Spirit' track I want to hear most as well, then 'Forgive Me' and 'Yesterday'