I LOVE this video. I've been listening to this all week long. It makes me bob my head, want to dance, inspires me to practice more and makes me feel so uplifted.
It's Jon Schmidt's arrangement of Taylor Swift's "Love Story" mixed with Coldplay's "Viva la Vida". (And I love that Fazioli piano he is playing...I performed in that same concert hall in Salt Lake in Nov of 2007).