Who Am I

I came to America from another land and helped my lover reclaim her life, even though people felt I was too immature. Time and again I watched my childhood friends as they stumbled towards marriage and I was there for them. My life became like a terrible game and I faced death for the chance to strike it rich. My love for music has put me in the company of a queen. But I have never forgotten how I had to play for gangsters and murderers. Eventually I pretended to be a gangster myself, but that's not who I really was. Eventually the people that I thought were my friends came to scourn me, but they all got AIDS and died. Now everyday seems the same and I don't know how to make it all turn out right.

This one might be way too easy. Let's see what you've got. Put answers in the comments section and I will give clues every 24 hours until someone gets it.