Go ahead and discuss how you learn to play piano. This includes how you use Synthesia, but also any books, websites, and even other software that is especially good.
(That doesn't imply this is a space for free advertising. Use your best judgment. If it really has to do with learning and you suspect you'd post about it even if you weren't the owner, then feel free.)
Learning to Play
No explicit, hateful, or hurtful language. Nothing illegal.