I stumbled over Lindsey Stirling about a year ago, thanks to Pandora, and she quickly became one of my favorite artists. This girl is not your average musician in any way, shape or form. She's a violinist, dancer, composer and she even edits her own music videos - and she does each of these things phenomenally!! Also, she's incredibly sweet and funny.
Elements was the first song of hers I heard, and I quickly purchased her full album. She has videos out on all of her songs, I believe. Her second album, Shatter Me, is due out at the end of this month - I have already pre-ordered it :)
Lindsey also does covers, like the one for Radioactive. I love the original song, but her cover, with Pentatonix, is fantastic. Check it out...
You can find Lindsey on Facebook and YouTube - check her out :)