Pianíssimo

First children's musical written by Tim Rescala in 1992 and staged in 1993, directed by Karen Acioly. It ran subsequent times, including at the Comédie Française in Paris in 2004, directed by Tania Costa, who also did the French translation. It was also released on CD and as a book.

 

https://www.youtube.com/watch?v=xrwYktoG2jQ