I am a music composition major looking to apply to graduate school this fall. Most places I've looked at, particularly the conservatories, don't see to care about the GRE in slightest. However, I'm also interested in applying to Yale, Princeton and Harvard. Is it safe to assume that (because of statistics, rankings, etc.) the GRE is more strongly emphasized at the Ivies? If so, what should I be aiming for? 1500+?