It’s not easy pinning down Rephlex, the label founded in the early ’90s by Richard D. James, AKA Aphex Twin, and Grant Wilson-Claridge. While many labels have clear aesthetics—consistent visual design, a focused signature sound—Rephlex, in its 23-year run, swerved from nosebleed techno to luxuriant lounge pop, musique concrète to blown-out ragga, and of course, lots and lots of acid.