I would think that it would mostly appeal to those that already enjoy/appreciate both, but I wouldn't bet against them making converts. There was a 2 Cellos concert vid, one where they were playing a U2 song, and they showed the crowd - lots of young women. I would think that any of those young ladies would be more likely to buy a ticket to the local symphony than an average girl off the street of that same age. The question then becomes - did 2C make that crowd or simply cater to it? It's gotta be some of both.