Maybe it's the venue. Gotta be noisy as hell. All those people going to the can and concessions, superfluous pyrotechnics etc. Probably hard to hear yourself. Gwen and Sting were a bit off tune. They did okay though. I know if Gwen was grinding right next to me, I would be hard pressed to say anything sensible much less sing. Maybe the time would be better spent honoring some old football greats. Trot out some octogenerians in old jerseys and give 'em a diamond encrusted NFL ring or something. Have a couple marching band cut heads and get back to the game.