anyone surfing here because their student is having regrets that they aren't following music

Hmmm. If he really wants to major in music, I’d have him audition again next year. Of course, being a vocal major he has an advantage and it isn’t quite as big of a deal, but I found that my son was able to get a lot more merit with music combined with academics that were lower than your sons stats. So music helped more than hurt him. I’d call a few schools that still might make take auditions and see how it turns out.