Original Song By Walk Off The Earth is Really Good
They're what any YouTube user dreams of: going viral online and being included in a mash-up video with other reputable, successful YouTube personalities. Walk Off the Earth wowed us when the five members performed Gotye's "Somebody That I Used To Know" playing one guitar all at once. Since then, they've covered many other songs in a way that is, if not as good as, then better than the original versions.
Their own music is worth listening to too. I may be late in the game on this one, but I'm happy to put it up on my humble little piece of the vast and titanic space of the Internet, late or not.