I’ll second @compmom. If you can pay for anywhere he is accepted, and he’s targeting conservatories, grades matter less, but if cost is a factor and/or he is looking at schools with general education requirements, he needs to have academics for that. He needs to be able to meet the admissions requirements regarding coursework at his target schools. If cost is a factor, that 34 ACT and good grades become important for merit money, depending on the school. My son is a strong musician but he received more academic money than talent merit money at his acceptances, by a lot.
My son is at a college of music in a large university. He is a smart kid (good grades and high test scores but mostly hates academics). He wishes now that he had more AP and DE credit to use toward those general Ed classes. He doesn’t like them any more now than he did in high school.