I don't think it's so bad... I doubt they had much time to rehearse -- they both have very busy schedules. It's easy enough to judge when watching the YouTube clip after the fact, but if you were there during the concert and didn't know it was coming, you'd probably think it was awesome (the guy filming it certainly did
Oh I agree.
I would have gone crazy if I was there, and I am no fan of either.
But for me it's kind of terrible mostly because of Madonna, some moves she does
. But I value the idea and the effort by the two artists