Piano guitar = WTF?

http://www.youtube.com/watch?v=GFqTd-CEjHM The Simpsons theme.
http://www.youtube.com/watch?v=VwC36OO3IXQ Final Fantasy - Chocobo Theme
Guys name is Zack Kim and just wow. :O
http://www.youtube.com/watch?v=-s74WZqef5U lulz techno