[Splines]

When I used to play piano as a kid, this happened to me all the time.

Sit me in front of the piano and I'll mindlessly bang out the song I've been practicing. Make me think about it in the middle and I'll forget what comes next.

[philsnow]

When I was a kid, I could not start reciting the alphabet anywhere but from 'A'. In the alphabet song, the latter bits go really slowly compared to the first bits, so for the longest time I thought "P" was the middle of the alphabet, because it comes about halfway through the song. It came as some surprise to me that "M" is the 13th letter.