This song was a massive #1 hit in 2011 for Belgian-born artist Gotye, who calls Australia home. Pentatonix's unique vocal-only treatment of the track helped to put the acapella group from Texas on the map in a big way including several Grammy Award wins. This makes the group of talented vocalists (and beat boxers) Avi Kaplan, Scott Hoying, Kirstin Maldonado, Kevin Olusola, and Mitch Grassi join Justin Bieber as one of the most successful artists ever to start by simply performing covers on video-sharing sites.