Oldest musician you've seen perform live

[The Curious Orange]

Last summer I saw Jefferson Starship and David Freiberg was 84 playing guitar and did the male lead vocals.

Oh, I forgot them. I chatted to Frieberg at the bar at a London show a few years ago, he's a jolly nice bloke to boot.

[cfmoran13]

I'm jumping on the Roger Waters train, too.  He was 78 when I saw him at Madison Square Garden two years ago.