March Madness is an electronic music showcase sponsored by Back2Wax. It sports two rooms, each displaying four acts working in different styles. The drum-and-bass room is highlighted by Raleigh’s Wally D, who puts together satisfying and professional examples of the subgenre, matching tenacious, fast-paced beats with intricately laid-out melodic bits and exceedingly well-timed sound effects. The dub room does equal justice to the headier, more laid-back style. Led by Psylo’s glitchy, hyper-rhythms, the lineup emphasizes how entrancing this luxurious technique can be. —Jordan Lawrence