The current surge in local hiphop is primarily generated by Blue Scholars. There's no doubt about that. The duo, Geologic and Sabzi, sell records, pack shows, rule the local airwaves, and are distributed by a Rawkus Records, the label that launched the hiphop underground in the late 1990s. Their latest CD, Bayani, makes one thing above all clear: Blue Scholars are getting better. Go to the show and see how Seattle does its own thing. (Showbox, 1426 First Ave, 628-3151. 8 pm, $15, all ages.)