I thought all the contestants sounded a little rough round the edges last night,i think there was a problem with the sound it didn't sound as if they were hitting the notes at all !
Probably because they weren't just standing there, they were mostly moving around, dancing and getting out of breath, just look at Britney, she stands and sings or dances and mimes like last week.
Il Divo sounded ok, but then again they weren't dancing. That's my explanation anyway.
