elzoog
You don't have to be 'like' someone else and use that for justification for being rude.
Okay let me put it this way (it's going to achieve the same result anyway).
What you should do is, decide what's important to you and don't let a woman change you into something you don't want to be.
Obviously music is important to you. As far as why it's important to you, that's none of my business and not really any of her business unless you think it's important for her to understand why.
After you have a list, sit her down and say X is important to me, Y is important to me, I am willing to compromise on Z but not if it means M, and so forth. If she is not willing to accept this, then she isn't worth your time. There are millions of other women out there. As H.L. Mencken said "Love is the delusion that one woman differs from another". You are in China and from what I hear, there are millions of Chinese women wanting to meet and marry a western man (I could be wrong).
I am 46 and still single. Pretty much most of the married men I meet are miserable in their marriage. One Korean friend admits to me on many occasions that he doesn't like his wife and that he goes out of his way to meet other women. Me on the other hand, if it's 7 in the evening and I want to go get Dominoes Pizza, I don't have to ask my wife's permission for that. If I want to buy a $50 book on the art of fugue writing, I don't have to ask my wife permission for that either. I don't do these things because I am trying to curb my spending, but this is a decision that I made for myself, not one that was forced on me by someone else.
It is my opinion, that you are expending too much effort on this woman. The woman you marry should be a woman that accepts you for who you are and helps you be a better man (that doesn't mean, change you into her fantasy man). From what you wrote in your post, this girl you have all of these strong feelings for doesn't sound like that kind of girl for you. You will find that out for yourself if you do what I suggest. Decide what you want and see if she accepts it.
Finding out
now that this isn't the girl for you is going to be less painful then finding it out 3 years from now when you have invested a lot more time and energy. Just like investing $50 in something that is a bad deal is a lot less painless than investing $10,000 in something that is a bad deal. Ending a girlfriend relationship is a lot less painless than getting a divorce.