Lindsey Stirling - Shatter Me (feat. Lzzy Hale)
Stirling's work with featured artists are a bit of a mixed bag in my opinion, but this one I really like. The hard and loud singing suits this piece too, even though it's something that usually rubs the wrong way.
On a side note, I invested in quality headphones - a pair of hardly ever used second-hand Yamahas that I got for just a quarter of their 400-euro RRP and that are now semi-permanently attached to my desktop PC. I'm not such an audiophile that I could ever have justified buying these things new, and I still have a pile of inexpensive earphones and a lowish-mid-priced Bluetooth headset for sports, travels and the like, but these things really make a difference when I have a moment to focus on music properly.