(SERIOUS SOUL) As the president of the Stranger Negro Club, I want to give Choklate's new CD, Choklate, our full endorsement. Three reasons why the CD won the club's support: (1) Vitamin D organized the music; (2) it has a guest appearance by Jurassic 5's Chali 2na; and (3) the singer not only draws from the rich tradition of the black voice, but contributes to it. Choklate is the soul sister of the year. (Chop Suey, 1325 E Madison St, 324-8000. 9 pm, $8, 21+.)