What was the song Kousei played after "Twinkle, Twinkle, Little Star" in episode 3?


In episode 3, Kousei and a little kid play the happy piano, playing "Twinkle,
Twinkle, Little Star". Kousei then changes the tune.

Was what he played a real piece of music? And if so, what was it called?




Mozart's Twelve Variations on 'Ah, vous dirai-je maman' (Twinkle Twinkle
Little Star).

[Listen to it on Youtube.](https://www.youtube.com/watch?v=7BTvoqVK420)

