It has never happened to me, even when I was playing restaurants and nite clubs on a regular basis. I think DonM had a visit from them and he just played some weird tunes he invented on the spot, just anything that came out of his head, they never bothered him again.

Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)