(HIPHOP) Vitamin D is Seattle's top hiphop producer, making beats for both national cats (such as Gift of Gab, De La Soul, and 50 Cent) and local heads (like the Boom Bap Project, Silent Lambs Project, and Choklate—who'll be performing with him tonight). Vitamin D is now finishing his solo record, but if you can find his magnificent 1997 mix Do the Math, you'll have the blueprint for the present creative expansion of Seattle's hiphop scene. (Nectar, 412 N 36th St, 632-2020. 10 pm, $6, 21+.) CHARLES MUDEDE