Taiku Mansion - Piano Puzzle Ragequit | Taiku Mansion Gameplay CDPOG

I play Taiku Mansion, and am stumped by the first puzzle. In Taiku Mansion, the bad guy says he has you trapped in a game that you cannot beat. Then the first puzzle you find is a Piano that says Build The wall In C. You can press the keys however you like, nothing happens. Thats as far as the game goes, or at least as far as I got. Taiku Mansion has a very frustrating puzzle. It has an answer (read comments from developer in comments section below) that I don't think anyone would ever get. Taiku mansion enraged me to the point of drinking an entire iced tea all at once. IT WAS SO COLD.