Even putting aside the seismic way Screw reinvented the sound of Texas—thirteen years after his death, the city is still heavily impacted by the couple hundred tapes he made during his lifetime—Screw has had a major impact on music. And it's not just the Screwed and Chopped versions of popular albums that drop every month. From A$AP Rocky, who's used screwed hooks throughout his career, to Drake, who came up rapping over screwed tapes in his bedroom, current rap performers continually pay deference. But the debt isn't always explicit; popular artists from both hip-hop and R&B use slowed vocals as an effect, the lethargic, narcotic sound of Screw mutating pop music's DNA.