WMG / Sparky's Magic Piano

The Dream was not All Just a Dream. It really did happen...

Sparky did in fact meet a magic piano and end up turning into the spoiled brat we see throughout the experience, and did get humiliated at the end. This was intentional by the magic piano in order to make a point to Sparky, because it saw that underneath his kinder nature was a much darker and less pleasant side to him if he were to gain any significant kind of fame or fortune if the magic piano were to just use its abilities to help him. Once it was sure that Sparky's lesson had sunk in, it ultimately reverted everything to prior to that fateful day so that Sparky could have a chance to do it properly the second time around.