Skrillex is best known for his dubstep tracks. Heavy dance tracks that took the dance world by storm a few years ago. He even did a full album with the metal band Korn. Now he's working with Justin Bieber? Kind of a switch.

But it's an awesome song that you need to hear. I looked for the official video and found 3 different ones. So I'm posting all 3. Just watch whichever one you like best.