Music to my ears?

Yesterday I made the kids work and play outside virtually all day. We planted flower seeds, pulled up dead pushes, edged the path, and rode bikes! By the time 5:30 rolled around, the kids were ti-red! They were playing nicely inside: Sabrina & Stu in her room and Chase playing around on the piano. I called them together to go back outside to clean up the outside toys. Sabrina and Stuart headed outside, but Chase went back to the piano.

ME: "Uh, Chase? We're going outside now to clean up. Not later."
CHASE: "M-om! [That would be a two syllable 'mom'] I'm doing my piano lessons."

Now two things make this funny.
1. Chase doesn't take piano lessons yet.
2. 'Piano lessons' consisted of reading the lyrics to songs in Disney's First Songbook while tickling the piano keys.