Original Song: "Can't Hold Us" By Macklemore & Ryan Lewis
Cover Artist: YouTube's favorite a cappella group, Pentatonix. You might remember them from the third season of NBC's "The Sing-Off" (which they won).
How It's Different: Despite using no instruments, the song is surprisingly upbeat thanks to some serious beat-boxing skills from Pentatonix. Their rapping is also crazy-impressive. We will say that, unlike Macklemore's official video, this YouTube cover was most likely not shot in 16 days on 6 different continents.
Why We Love It: Like their a cappella covers of "We Are Young" and "Somebody That I Used To Know," Pentatonix nailed this one. Their videos are known to get millions of views in days -- and after watching "Can't Hold Us," it's easy to see why.
Better Than The Original? Macklemore will always reign king, but when it comes to a cappella, we dare to you find any group, anywhere, better than Pentatonix.