A brief search for Lindsey Stirling on this site will find you a very awesome and talented young lady who dances, prances, and moonwalks, all while playing the violin.
This is a cute video, and it comes from a lot of playing with Shadows. You'll note that the light is on her face, almost head on with her, broadcasting a shadow on the wall to the left side of the screen .... yet the shadows at her feet are going to the right. Even if you don't like the music, like the camera work.
Next .... this is just very strange. Pretty much every bit of star wars music in one clip. With some funny bits in between.