A Good Day to Be Black and Sexy

[Euphoria]

Just watched the trailer for "A Good Day to Be Black and Sexy".

Here is the Apple Movie Trailers link: http://www.apple.com/trailers/magnolia/agooddaytobeblackandsexy/

Throughout the trailer a R&B/Urban/Hip-Hop song plays - it sounds sped up and/or remixed. A man harmonizes throughout the song.

Does anyone recognize the song playing?

Thanks!!