The best heckle I ever got was when I was playing in a pseudo-medieval band, wearing costumes and doing funny songs. One night we got heckled by a medieval musicologist who was sitting at the bar drinking WAY too much. He bellowed at us because we were using A=440 instead of A=415 or some such, because we changed keys in the middle of a song, because I was playing harmonics on the mandola. It was very strange.

JP