Royals by Lorde debuted online in May, and is slowly becoming an Internet sensation. The original music video now stands with over 14 million views!

In August Walk Off The Earth covered the hit song further promoting the pop song. 

Now, a cappella group Pentatonix has taken a metaphorical swing at the song, and knocked it out of the musical park as expected. 

Truly amazing what you can do with only vocals.