Moshkito
In one concert I went to ... someone yelled out "rock'n'roll" and when the band was done playing the piece, they stopped and the angry looking man with the Beethoven face said ... please take that man out of this theater, or we are done here tonite. Security took him out! And we got almost 2 more hours! They had already played for over an hour!
And they thanked the audience, for the care, and appreciation. 2 encores!
So he was the Axl Rose of the classical scene?
I could not fathom being that humorless.
CSB time...
On tour with just about the meanest, hardest punk band Canuckerland has to offer some clowno in the crowd (of some dirthole backwoods bar) yelled "PLAY SOME SKYNARD!".
I jokingly launched into the intro riff to Sweet Home Alabama.
Yup... I almost died from the glares of my fellow band members... and likely would have from their boots and fists if I did not stop playing it as promptly as I did.
The crowd got a chuckle though.