Haven't logged in here for a couple years. Obviously you posted this some time ago but figured I could give you an answer. My understanding is that generally the writing score is given the most weight by music programs. I have heard this from faculty first hand. Also your GPA is great so that should help you out too.
The most important parts of your application, however, are your statement of purpose and your writing samples for Theory PHD's. So: is the GRE important? Yes, but it is not the most important. Beyond that not all the sections are given equal weight in determining admission.