So a couple of weeks ago, we were playing...So I start it off with a little intro riff...and then our other guitarist/singer comes in...with the capo on the wrong fret... Worst sound known to mankind. Ouch. That's all I have to say. Probably one of the worst messups I've ever heard, and I'm proud to be a part of it. Anyone else have a similar experience (ie, dismal mistakes live)?