This is my first attempt at making a dirty south style rap beat. So far, I've found that the keys to making a good pitched snare roll, are to pick the right drum sound, and to transpose the drums by the proper interval. I think a splashy, hissy, fairly broadband snare sound works well. Of course, you could also use a tom or a combination of drum sounds. The transposition I used for these drums was 3 semi-tones between each sound. I spent a lot of time trying to find the perfect synth bass. The bass is a combination of two synths, one for a punchy attack sound, and the other for the thick sustain.
I was planning on rapping over this, but I need some more time, since I have never rapped in my life. For Part 2, I will improve this song by possibly sampling some "hey's" and "ohhhhs" from some real a capella tracks. I tried to fake it on this track by saying "hey" with a different voice, and pitch shifting, and panning different takes to create a thicker sound. I think part of the key is to have recordings of people who have a different timbre to their voice, since you can definitely hear that the "heys" are all me. Once I write the rap I will also improve the song structure, and mix it better.
For now, please enjoy the first part of this experiment and stay tuned for the updated version in part 2.