Playing the piano in my sleep

I mentioned that I was a known "sleep talker" in my previous post about the How the kids sleep. By this I mean that I will speak out loud while sleeping in the middle of a dream. If Doug is up for it, he will sometimes ask me a question, and I will answer back in the context of the dream. As long as he doesn't ask me anything too complicated, I can carry on for a few sentences. If the questions are too hard, I get confused and annoyed and say "You're waking me up!" Sometimes I will have no recollection about the conversation in the morning.

This reminds me about how I used to play piano in my sleep when I was a teenager. My father told me that before he woke me up in the morning, he would see my fingers playing while I was sleeping. I found this old photo from around that time (1981) of my piano playing. After looking at it for a minute, I figured out that I was playing Chopin's Fantasie-Impromptu Op. 66. I knew this from seeing the A in the left hand and my thumb on the G#, an unlikely combination. I dug up the sheet music and found it on measure 13. However, my right ring finger is pressing down the F, which is definitely a wrong note!! I don't remember whether I was just posing, or whether it was taken while playing. Either way, I don't think I was counting on finding a mistake 25 years later. There are more photos in this set and I was able to figure out what I was playing in another shot as well. It is probably "finger memory" recalling all these pieces, which is pretty amazing.