(HIPHOP FORUM) The great Jake One, brilliant Kev Brown, inspirational Vitamin D, and emerging Bean One will be part of this open forum, In the Mix, on the art that is king in the land of hiphop: producing beats. There will be a question/answer session, and live performances on beat machines and software. (The War Room, 722 E Pike St, 328-7666. 5 pm, free, all ages.)