Even though it is a "live" performance, you don't know if you are hearing her play, or if it is an audio track. You don't hear her violin fade as he turns away from the camera. Is the violin miked, or is she "bow syncing?"
I don't think that they had an audio track on the beach.
Even if she's not actually playing the music live she's putting forth enough of a show to make it seem as if she's playing. And some of the move she does are crazy intense alone let alone while playing.
She's pretty amazing.
__________________ R.I.P. Plaidman
Yes I am. I'm just the kind of girly who'll kick your ass if you mess up my glitter shoes. ~MystyGlyttyr