This was an enjoyable read, although it did feel a little tonally odd at times. There were certain plot points that I never really bought (Endplague?), however the over-arching themes made them fairly easy to gloss over (although one passing comment at the end threw me a bit: did it mean to imply that Katrina had formed some sort of relationship with her apparently unrepentant molester Tso?).
Also, although I can appreciate the appropriateness of the Bartok piece as a metaphor for acceptance of things outside your normal realm of experience, I am not a great lover of the violin, so I struggled to really understand the impact the music was meant to be having. Granted the experience was well described, but I can't say I really believed in it. I suspect this is a failure on my part however.
So, overall, despite some misgivings, a good read; probably even more so if you have greater musical appreciation than I do.