In reply to Domino.

Exactly, I love the Stones so seeing Gaga perform with them was great. I just watched Mary J Blige and Florence Welch performing the same song with them and, whilst all three women sounded good, Gaga took it to another level with more powerful vocals and incredible stage presence. Her and Mick are both flamboyant larger-than-life characters and I was amused to see Mick Jagger tweeting "I can't believe I performed with Lady Gaga", she tweeted something similar about Mick as well, mutual respect going on there ;o)