I do wonder, though... I was in food joint/bar, sitting outside listening to the live music. Guitar player, bass, rhythm guitarist (also lead vocalist) and drummer. Everyone was having a good time, as did I. I found the music mostly un-listenable. Mostly because their singing and harmonizing were out of tune. That said, my instinct told me not to make any comments about the music, and I did indeed keep my mouth shut. Now I'm back at work and my co-worker has some type of music mix comes on and some type of out-take of Fleetwood Mac doing "Go Your Own Way" was on. It was not the normal version, but some out-take or studio warm up version. It was completely out of tune and the singing was horrible. It struck me that Fleetwood Mac would never want anyone to hear that version of the song. Then if further struck me that I wonder if the band at the bar joint knew how bad they sounded.... I quit playing baseball (I was not a great player) because at some point I knew I wasn't good enough for my own standards.... Where am I going with this? I've heard of musician's that are perfectionists. So I guess to be honest that is the type of musician I want to listen to. But I also don't want to criticize. I'm curious if some musicians are aware of their own limitations, but the thrill of being on stage is just too irresistible.