Many beatmakers use a method known as quantizing, which lets you perfectly subdivide electric drum-machine sounds into positions within a measure. From there, the pattern can repeat indefinitely as a loop. Dilla preferred to play beats on a drum machine by hand in real time. That allowed him to color his creations with a signature rhythmic sway: languorous, leaned back, landing just behind the beat. In some ways, it was a new paradigm for the swing rhythm that had been born in West Africa and grew up with jazz.
In other words, Dilla merged the analog and digital worlds to produce true sonic magic.