daftest one was depping for a well known band,yes knew the song,great it started with bass and vocal...on the wrong string,it was real bad for about ten seconds,the realization,the sick feeling..One more..one of those gigs where fuses and plugs get trodden on,had used the spares...the was an old keyboard at the back of the stage area,I stole the plug ,did the sound chech all ok,then the management inform me about a half time act..yes youve already got it ,,,,a keyboard player,,