Trained & Experienced Vocalist Needed for Ballad.

I have a song similar to Beyonce's Halo that I would like a trained and experienced vocalist who knows how to fully control her breathing to sing. It will require the singer to sing with her own professional sounding recording equipment to record remotely and send me the files. It is not a one take or one track song. It is layered with backgrounds, harmonies etc and it requires someone who knows what she is doing vocally to do it. I stated $100, but price is negotiable, based on ability. I'm looking for the best voice and voice control for the song. It will also require an agreement to be signed that this is a work for hire and I own and can do what I please with the vocalist's performance of the song. Thx.