Having style and a sound as a dance music DJ is one thing, but having a genre you never step out of, like a DJ who just plays techno music — or, more specifically, Detroit techno music — kind of sucks. The best part of a truly good DJ, and a truly good DJ set, is the DJ’s ability to transition among many styles and genres, weaving a narrative between disparate genres. New York’s DJ Spinna and L.A.’s own J Rocc are two DJs not at all confined by genres. In Spinna’s decades-long career as a DJ and remixer, he’s worked to connect the dots between hip-hop, house music, soul, funk and Brazilian rhythms. J Rocc, meanwhile, has concentrated on illuminating the connection between hip-hop, electro music and the weirder varieties of rock and electronic music.