Lindsey Stirling? Check.
Alison Goldfrapp? Check.
Laura Marling? Check.
I wanted to bump this because nobody mentioned Claire Elise Boucher, otherwise known by her stage name Grimes. I absolutely adore her as a musician and person. I recently bought Visions, Darkbloom and Art Angels and she's now my favourite artist.
Some people complained about Art Angles for sounding too "mainstream". Personally, I shy away from anyone who criticises music on those grounds.
I have Flesh Without Blood on repeat.
I know Sia has been mentioned. I've been listening to Chandelier at least once a day the past week and checked out her other singles. I quite like her music and Maddie Ziegler is a grand mix of adorbs and crazy-awesome.