The personal background part of it is fine, I believe, but the second part of it, the 'plea,' I guess one can call it, is still being worked on. Here's what I have so far for this second part:

I no longer wish to be a pianist but a vocalist; I wish to be more than just another voice in a chorus. I was born to be a performer, as I had been with the piano. I believe that what keeps me from being as good as a trained voice is performance experience, for practising alone can only take me so far. Yet I cannot work alone. It is only through partnership and togetherness that I grow in my own experience.

Since then I have waited for this very moment. I, still penniless, chase my dream through you, beside you, with you; for I am indebted to you for bringing me out of the darkness and back to my senses.

Thus I offer you my voice to take.

I believe that my passion for the art will take me to places and heights that I never thought to imagine. I believe that my passion will reveal to me skills that I never thought I was capable of having. I believe that my passion will give to you everything you seek and ask for in me.

Make me a part of you. In doing so you will shape me into what I have the potential to be, and to that end, this artist leaves her spirit in your hands. You are my inspiration; I can be yours. Share with me all you have to give and I shall give to you all I have to offer. Take me with you, and together we shall ...

Also, I think I need to get across several things more clearly, but again I'm not sure how (thanks inkey!):
1. That I desire to be part of them as part of a group and to work together as a group;
2. That I will pull my own weight in the group and contribute to both the planning and the execution of its art; and
3. That they can help me grow as an artist (and possibly vice versa).
Basically, to get across the point that I will not make the same mistakes TT did.

Ideas?