classical pianist

there was an older guy, dont know if he is still alive, but he would grunt while playing. I cant remember his name, but I know he also used to leave performances if someone in the crowd would cough or get up, or if the temperature was too warm or cold, anyone know who I am thinking of?

One pianist come to mind and its Keith Jarrett. He was very demanding what comes to audience and was very intolerant to audience noises. I remember that he used to be very living when he performed and also used vocalization in his playing like many greatest Glenn, Oscar to mention couple...

Cheers

nope but that lead me to who it was, Glenn Gould.

Oh, I thought it could be Glenn, but I never heard that he leave performances because of audience, I knew that they were very same kind of personalities with Jarrett, but always thought Jarrett little more tempered.

Glad you figured it out. Cheers

yeah you are right jarrett is the mal-tempered one but I was originally thinking of gould.