The starburst lens flare behind the cello, the spiraling, curving lines, the great use of negative space... the elements come so perfectly together in the composition, that at first I thought that this was a planned painting. Great shot!
I saw these guys in concert a few years back when they came to Orlando. Honestly one of the best shows I have ever been to(Right next to the Tran-Siberian Orchestra). These guys are amazing, and this photo is stunning. It really shows the energy of the show.