TL : DR the thread, but DD JUST picked her school so am pretty intimately aware of the process. DD applied to 14 schools - we visited ALL of them! Not saying you have to do that, but we were looking for a school with a competitive lacrosse program, that we could afford, that fit DD's vibe - and had DDs major. Being in CA, almost all the schools are club programs (rather than NCAA), which in some cases was a fit, in other cases not really. Some teams folded during COVID - you're going to find music programs that didn't survive too I am sure. We checked on WUE schools (program where you can go to out-of-state schools for in-state tuition) - same story, but a bigger range. LSS - that's why we had to visit them all - just scanning websites doesn't give you the full story.
Then (older) DS met a coach from a private school in Arkansas.
DD has no desire to go to AR, but she spelled out the program they have where you pay tuition based on a school in your state and they match the difference. WHAT?!? suddenly we could afford a private school in another state and had no idea that was possible. So I called a school in OR that DD WAS interested in. Turns out, yes, if you have good grades, a lot of the private schools will give SUBSTANTIAL academic scholarships that put THOSE schools in reach. They also have a lot of need based scholarships DD did not qualify for.
OK, but here's the thing; all of those private schools, for the most part, are part of the Common app. And the cost to apply is $0 - so why not apply? Even ordering transcripts was no cost to us.
In your case, Social media is your friend. Find the schools that are the best fit. Maybe there are band competitions, or special events that take place that DS wants to be a part of - IGNORE the cost for now - follow the ones that interest you on Instagram, check them out on YouTube, maybe go old school on Facebook. From there it's a rabbit hole. Those schools are involved with other schools - maybe those are more affordable, or are a better fit. Don't be afraid of smaller schools or private schools...for now. SOPH year is a great time to start and, sorry, but, my experience, you, and not so much your kid, and definitely not your school counselor, will be doing a lot of the leg work.
In the end it was a lot of work, but a lot of fun, and DD is happy with the choice. Your DS will be too. ENJOY the journey!