@helpingthekid73 what schools are you thinking of that have BA programs with instrumental music majors? I am confused. UCLA used to but changed to BM. All the BA programs I am familiar with have liberal arts music majors. The degree is in music, not an instrument. There may be a performance component in a few classes, but most of the performance is extracurricular (sometimes for a small amount of credit) and lessons are often funded and given a small amount of credit. It isn’t the same as being in a studio at a BM program. I think it would be helpful to know what BA “instrumental music majors” you are looking at- I don’t know of any!
A general music BA usually includes theory, composition, music history, musicology, ethnomusicology, music technology and electives. It can be done without playing an instrument at all at the schools we know about.