Ghostwriting

I'm looking for someone to help me ghostwrite a rap song under 1000 words, on a provided beat. I have a general idea of what I'd like the song to be about, but I'm open to suggestions as well. The ideal candidate should be able to capture the spirit of a rap song and add artistic flair to bring out the emotion and intent behind the song. This project requires someone with experience writing rap music as well as having a good understanding of the genre. Timeframe is really really flexible.