You mean that one person graduated from several universities. There are several situations. First, undergraduate and graduate students are not in the same school. Second, domestic universities and foreign universities will jointly train, and they will get degrees and diplomas from both schools. If you like violin, you can sign up for an interest class. In addition, see if there is a violin major in your school. If yes, you can apply for a second degree, but it is very difficult to apply. Besides, your energy is limited, and your major will have many tasks. If you study at the same time, you will not see one thing and another. I hope it helps you.