A few things that I find striking about this performance:
1. She builds the song --LIVE--completely with her voice and her digital recording station thingy. I love it when people do this - Kanye West is especially adept at it too.
2. She's on ground level. This reduces hers and the audiences sense of heirarchy which I would assume makes performing that much more intimidating.
3. She's alone. Intimidation x2. You can hear her at the end saying it's scary being alone.
4. She's dressed like Beetlejuice which means she has balls.
