A year and a half ago, the San Francisco-based Om Records released the compilation Deep Concentration, which trumpeted two trends in underground hip-hop. One was the complex crossover between hip-hop and electronica, exemplified by production-oriented cuts from Q-Burns Abstract Message and the Angel. The other, paradoxically, was the celebration of that most basic of hip-hop basics, the turntable, and that’s the focus of the comp’s recent sequel, Deeper Concentration. The collection has its share of sheer exhibitionism–like the Scratch Perverts’ acrobatics on “Course of Action”–but most of it involves as much actual mixing as scratching, like “Ritual of the Nile,” in which J Boogie’s Dubtronic Science layers Arabic flute samples on breakbeats, or Ill Media’s “Brother in the Back,” with its gear-stripping tempo changes. The Chicago stop of the Deeper Concentration tour will feature New York’s DJ Ming & FS, whose “Madhattan Bound” fuses loungey horn charts with off-kilter drum ‘n’ bass; rappers Siah & Yeshua DapoED, two of the most impressive voices to emerge from New York’s hip-hop underground; and locals DJ Sole & JC. The event introduces Smart Bar’s weekly Hybrid night, at which Sole will present other national and local artists who are working similar turf. Sunday, 10 PM, Smart Bar, 3730 N. Clark; 773-549-4140. PETER MARGASAK

Art accompanying story in printed newspaper (not available in this archive): JC & Sole; Ming & FS uncredited photos.