1. Not quite right.

2. Music lovers is not as good as the first one. The word lover does not mean lover, but lover. . . Rather sweaty. . .

3. To be honest, there is something wrong with the name itself. You see, there is no distinction between amateur and professional music lovers. Anyone who likes music can be called a music lover. Only music workers are divided into professionals and amateurs. It is recommended that you change the name to "China Music Fan Union" or "China Amateur Musician Union". I feel like the former should be what you want.

Hope this helps.