It is one thing to plagiarize another artist, it‘s another to improve said artist‘s ideas. Mediocre Autechre and Prefuse 73 imitators still trying to figure out Max/MSP abound, but there are musicians who enliven those mavericks‘ sketches into graffiti murals that stretch for blocks. Miami glitch-hop label Merck carries such aerosol cans. Merck Mix 3 amasses the label‘s roster, delivering beats that crack bones with every step as electro-funk melodies scatter like hummingbirds. Too many sublime moments are interrupted, like the post-Neptunes bounce of Aphilas‘ “Collective Memory Loss” and Ilkae‘s narcotic Tokyo lounge in “Scarlet.” Otherwise, the disorientation pleases.