Holy smokes, but did Sarah Jarosz catch me by surprise. I downloaded both of her albums from Amazon, and there's a deep sophistication in her bluegrass-tinged music that you wouldn't think you'd get from such a young woman - except that she's been playing since she was two.
Yumm... that music gets me in my soul. Watch how she moves with the music: after the introduction, she is curled up in that song and in a different place and time. The audience is almost irrelevant for where she's at within her own music.