Maxi Fan is absolutely right. Awesome though it is it's has nothing whatever, either video or track, to do with the Ally Pally gig and appears to be nothing more than the radio edit of the original mix which if your a fan you'll doubtless already have.

Still the most awesome dance tune ever, but take note. This is not the live Alexandra Palace version, but the standard original video. I was at Alexandra Palace and it was an unbelievable experience.

Have alerted iTunes to the problem, but they seem disinterested.