I know I said 3 but I was on a roll.
When it comes to piano, there's like three types of memory.1. Muscle memory2. Memorizing how it sounds3. Memorizing the score4. Memorizing the form and harmonies5. Memorizing how your hands actually look when you're playing.I know I said 3 but I was on a roll.ANYWAYS, when you're nervous, the first thing to go is your muscle memory. And if that's all you got, well then you're out of luck. I think that's the most common reason why people have memory slips. They commit everything to muscle memory. The second most important thing I think is to have a good theoretical knowledge of the piece.When you're practicing try saying the harmonies out loud while you're playing. I swear to god once you KNOW all the harmonies you will feel WAY more confident about your performance. Also you should practice being able to start anywhere in the piece. Mark a few starting points on the score and memorize them.
pls post more, I love your sense of humor.
At this stage you should focus on your ability to recover from the memory slips and try not to think about them too much so that you lose the right feel when performing. The more you worry the more probable it is you will get them. Some people are prone to memory issues no matter how well prepared. Time (and work such as explained in the previous post) only will tell if you are one of them or if it's just a matter of practice and getitng over the nervousness. Pieces you have learned recently are more risky. When you return to something over and over they will become more secure.
A little pressure pushes one to be better. Too much above the breaking point will kick in the autonomic memory blanks - designed to protect us from severe trauma. That might explain the binary outcomes of nervousness on a player. Memory slips occur probably bc of the wrong “dosage” of pressure.