Saw a show where Nelly was the headliner (opened by Stickyfingaz. Boo yah!). Dude was on stage for like 25 minutes. Woulda complained, but I was glad to be leaving.

On the other hand, I saw a Ben Folds performance at a FESTIVAL concert (Ben folds solo - just him and a piano, mind you) where he rocked it for an hour and a half.

Also saw a Roots concert in Cincy where Thought was sick, the place was smoky as hell, and y'all still rocked it for two hours.



So, in my opinion,
-25 minutes - weak
-90 minutes - I feel like I got my money's worth and the performer gets my respect
-2+ hours - Like eating steak and a sweet potato for dinner and finding out you get cheescake for desert.