Why are all of the performers in this video dressed like little Marios? I don't really know, but who cares when they're playing a medley this awesome?

This song, arranged and performed by composer Diwa de Leon, features some of the best music from role-playing games, including (in order or appearance in the medley) Final Fantasy, Chrono Trigger, The Elder Scrolls V: Skyrim, Xenogears, Super Mario RPG: Legend of the Seven Stars, Final Fantasy IX, Final Fantasy VI, Chrono Cross, Final Fantasy X, Final Fantasy VII, Legend of Mana, Mass Effect, Dragon Quest, and Grandia.

You can hear it for yourself after the break.