Perhaps people do not know how music and math go together?
The composition of music has the elements of counting, measuring, rhythm, metering, ordering and repetition among other things. The tuning systems and details like frequency, consonances, set theories, timing and a host of other things that make music pleasurable to listen to are all connected to numbers and yes, math.
My son is the only one in the family who has the gift of understanding numbers. But that because I know he has that gift, this won’t have me rushing to buy musical instruments, getting a Bbe at musicians friends and enrolling him in music lessons. Why? He is not that interested in learning how to play musical instruments. I know if he puts his heart in it, understanding music and its complications would be easy for him.