Compose and record backing track for song

I have written a song - music and lyrics - but I am not good at arranging or orchestrating so I need someone to take the melody line (written in correct musical notation and attached to this job posting as bitmap files) and record me a backing track so that my female vocalist can rehearse the song.

The backing track should start with just a simple accompaniment on acoustic guitar or electric, but at the end builds to a Verve-style anthem, which will need full sound with percussion etc.

The song is sad and should be written bearing in mind that the voice will be cracking up in places (deliberately).