The Imagine Dragons song Radioactive is quickly becoming a huge hit for Las Vegas band.  It's the first track from the band's debut album, Night Visions, and their second single.

In the world of YouTube and the internet, whenever a song becomes a hit, random covers and mashups are sure to pop up.  Most of the time, the covers and mashups are terrible, but a few great ones always rise to the top.

David Wong is one of the people who cover hits on his YouTube page.  He's done songs by The Lumineers, Taylor Swift, Muse, and many more.  He plays the violin and uses electronic loops to create his sound.  Check out the Radioactive cover below.