Specific to Violin :
BU wasn’t that hard to get into (regional audition in LA via recording), accepted.
Oberlin is fairly competitive, no screen video was required (2018), S skipped audition but got accepted in Physics program.
UCLA, fairly competitive, S got prof he wanted plus generous scholarship (in-state already)
USC, extremely competitive, S got top choice prof, some scholarship, top choice school, attending.
UMich - not sure how competitive for violin, but GPA bound, S applied but withdrew 'cause of other offers.