I got to see him from the second row about nine years ago. You could tell that underneath that suit, he was thinner than his cigarette. A breeze might have blown him off the stage.
But good lord, he could still slay on guitar. On solos, he'd intersperse phrases that sounded like pretty-standard bluegrass with riffs that would just blow your mind with inventiveness. An all-time great.
RIP Tony.