I used to get so much done on my BART commute. Also learned piano on a little 25 key midi keyboard until the program I was learning from started needing a 26th key.
I used to get frustated that the train shook so loud that in combination with the sound of the train I struggled to listen to podcasts, kudos to you.
That's so cool. Can you share more about this. What program and keyboard did you use? Did you proceed with more serious learning?