If you aren't familiar with any of Nujabes' work, or the Luv(sic) series, you should really take the time out to go listen to his music. I recommend starting out with his album "Modal Soul" and then moving from there. He was also one of the producers for the music used in Samurai Champloo. The intro (Battlecry) was produced by Nujabes and had vocals from Shing02 on it.
Anyways, just know that Nujabes is (was.. R.I.P :/) an amazing Jazz/Hip Hop producer from Japan. He is basically to Japan what J. Dilla was to Detroit (R.I.P to Dilla as well :/)
Below I posted the actual song, and my remake under it. My remake does not have any DJ scratches or Vocals over it (although I do have the acapella of the extended verse for Part 3) so it should be really easy to hear what is wrong with it.