Choirs do it all the time. It's nerves, you have trouble concentrating.
So true. What it is is a response to stress. Perfectly natural. The stress doesn't show up as an elevated heart rate or breathing -- that's for later, when the lion is about to pounce on you. But you are at an enhanced state of awareness, and your perceptions and everything else speed up (so you can spot the lion before it pounces -- which is not very helpful in most modern situations!).The only solution I have found that works reliably -- and not all that reliably! -- is to engage in some form of deep meditation (prayer, for those of us who are religiously inclined) for a few moments before any performance. Deep breathing. All that sort of thing. Do NOT count on a metronome or some gadget to help you, though!
It's so weird! I'm not just talking about playing for hundreds of people (though I speed up for that too) but even when I'm playing at a casual masterclass with just a few people watching. I'll check my heart rate and it's not fast or hard. I'm not even sweaty or shaking at all. Shoulders are relaxed, everything is perfect. Then I confidently start to play the piece that I have well prepared and I play it ~10 or 20 numbers higher on the metronome. It's terrible! Even when I intentionally play it slower than I think I need to. How can I stop speeding up when I'm not even nervous?!
Thank you for candid post. I will try to reply in kind.1) You, of course (as I did for 40 years) take for granted that the way you were taught to play is the manner in which the composer pianists of the 18th, 19th and early 20th centuries were taught to play.GROAN!!!!Now, I will stop: because those who disagree with this premise, that the original performance practice is valid, would say otherwise.Accordingly, I ask you to visit my video:(paying close attention to the follow-up comments regarding "tempo modification").And then, if you want any further data (as always, at no charge), please holler at me by PM. Parenthetically, I really do not know why I continue to state this anymore. Everyone then automatically thinks it is a con, and I understand that. However, as an ASPY, it is my way.
He said that the graduate organ major, who was sitting behind him, would start out at an accurate tempo, and then (phrase by phrase) he would speed up, and speed up.Historically, all of the great concert pianists of the 19th, and early 20th centuries, were required to study their art form in said dual (solo and ensemble) fashion. And, vis a vis, (as evidenced by the multiple recordings of these famous chamber music ensembles of this time), they continued to do so.Duh! Accordingly, they could count and keep a steady tempo!
" I started to dismiss this when you went off into your historical practice rant, but your observation about the playing has merit."1) Historically, every recognized composer/pianist considered it "normal instruction" to have a theory/composition teacher, and to also play in as many ensembles as possible.