It's time for us to appreciate the impact Rob Castro, a producer and musician, has had on local hiphop—a scene that's now receiving national attention. In the business of recording, mastering, and rocking beats for nearly two decades, Castro has worked with some of the best acts in town—Silent Lambs Project, Silas Blak, Oldominon, Grayskul, and Onry Ozzborn (who also performs tonight). Castro is at the heart of a sound that first emerged in the early '00s with Oldominion's One—a dark, gothic, and cinematic hiphop. The pleasure you will derive from this show is seeing a real pro and a piece of Seattle history in action. (Chop Suey, 1325 E Madison St, 324-8005, 9 pm, $8 adv/$10 DOS, 21+)