Passing out in the middle of a performance would really, REALLY suck... -Tony-
"Mr. Barere seemed to be in top form. His entrance solo was brilliantly delivered. But presently this writer was puzzled by the pace of his performance, which seemed excessively fast. Then comes the passage after the violoncellos have announced the second theme, of developments discoursed between the piano and the orchestra. A moment later it seemed as if Mr. Barere were bending over to one side, listening with special attention to the instruments as he matched his tone with theirs. In another moment his left hand fell from the keyboard and in another second he fell senseless from the stool to the floor. The orchestra stopped in consternation, someone shouted from the stage for a doctor, and with some difficulty the unconscious man was carried from the stage."
When Simon Barere suddenly passed away on April 2, 1951, on the stage of Carnegie Hall while performing the Grieg A minor piano concerto with Eugene Ormandy and the Philadelphia Symphony Orchestra, the music world lost a colossal figure.
On a more serious note, dizziness can be caused by holding one's breath as a result of tension during a performance. I've experienced that. One must make a special mental effort to relax when any kind of tension begins to make itself apparent. Of course, being completely "on top" of a work before airing it in public helps one's mental attitude enormously!
((One contestant in a competition walked up on stage... sat down at the piano... and starting crying uncontrollably)) -- I would much rather faint that that...
As a judge... I've seen ALOT of nervousness on the stage. I think if you have SO much pressure on you, that you "pass out", Then you obviously are picturing "the worst case scenario"... and simply cannot deal with that! The truth is... you "forget" or "lose" 30% of what you have learned in a piece when you are in front of an audience... Simple as that. Performing actually does involve luck too.((One contestant in a competition walked up on stage... sat down at the piano... and starting crying uncontrollably)) -- I would much rather faint that that...