I got to put together an oral history of the Rawkus label for MySpace. Here’s a nugget from DJ Premier:
"I remember Busta Rhymes happened to be with us while recording "Mathematics." I sold drugs for a short period in my earlier years—not that it came to anything—but I knew my mathematics and I remember Mos Def was breaking down the ounces turning into a kilo and he was a little off with one of the numbers. Busta was like, "Hey, did you hear what he just said?" We rewound the tape and he was right. It was just one number but Busta caught it. And with that beat for "Mathematics," I remember Scarface saying, "Man, if he don’t do a song to that I want that. I have never heard a beat like that in my life." I love that beat."