I know a lot about music majors, including folk music and western music. The better majors of folk music are: suona, double bass (both Chinese and western music need double bass), Da Ruan, zhongruan and Sheng. . . . There are relatively few people who learn the above instruments, and the competition is relatively small. There are too many people learning erhu, pipa and guzheng, and the competition is too great.
I don't know much about western music, but I know that there are many people learning flute, clarinet and cello, and there is great competition.
It's too late for sports specialty students to learn now. Sports need talents and conditions, especially track and field, unless you have good innate conditions.
Art can be learned, but it needs time, interest and some talents. But there are too many people studying art now, and there is great competition.
In addition, the piano can't be considered as a specialty unless it is admitted to a professional college.
I hope I can help you.