Eh they had no stage presence, and I hope that the it was technical issues but they sounded like an awful high school talent show. The fact that bands like Tom Petty and the Heartbreakers and the Stones can give such awesome performances well past their prime, while the BEP can't even do it while they're still kinda relevant really says something to me. Even the Who, down to 2 original members, Daltrey and Townshend were friggin awesome. The only thing good about the show IMO was Slash, but Fergie ruined it with her singing lol. The next show should be Slash performing his songs with Ozzy, Iggy Pop, Ian Astbury from the Cult, Lemmy, and Andrew Stockdale from Wolfmother from his solo album, that'd be sick.
EDIT: And Prince, he was amazing, I wouldn't mind seeing him again