FunkDoc1112
Heavily Armed
Yeah, I agree with you here...the main meat of the beat is fairly obvious, he just changed the pitches to give the loop a smoother ending/transition. It looks crazy from an outsider perspective but it's actually not super out there, especially if you've played with samples before. He wasn't being a mad scientist - he came up with a transition and made it happen with the ASR keys. If you hear the full song, you can tell he was mainly trying to make the transition that was already there smoother and thinking outside the box to remake it:You can clearly here, he chopped it around at the end for the torn around to make it a complete melody, but it's clearly recognizable in that clip, pitching it down was only necessary so you can rap over it and make it loop, plus it sounds better, but it did not make it unrecognizable
If I had to guess, he wanted to loop all of 2:40-2:45, but the end of it is kinda sloppy if you're trying to fit it into a 4:4 signature, so he made his own version of it.