Congrats for the admission at ND.
It seems your strength is in your test score and EC. Your GPA, ethnic background, and/or OOS status would have negative effects on the chances for some of these schools. Ross pre-admission is right tough but your EC may help IF you are first admitted by UMich LSA. Your GPA is below admission average and you are from OOS (20% or below admission rate). These would make it a reach. UMich considers GPA to be very important.
Music supplement from someone without a regional award may have little help. They adcom may only select certain music supplements for external review. So, the Ivy caliber reach schools are still reaches.
For top UCs, how is your UC GPA?