"I do karaoke singing, and I write songs a lot, and I do demos and sing them. I'm very lucky, in a lot of ways, because - I'm not trying to sound bigheaded - I do all the Rolling Stones songs in all the same keys as they always were in, so my higher end is still there, maybe better than it was, because I don't smoke anymore and I don't drink as much." Mick Jagger insists he's sounding as good as ever on the Rolling Stones' 50 & Counting tour.