By Don Heckman Los Angeles – Feb. 2. (Mon.)  Emerson String Quartet.  The veteran, eight Grammy Award-winning ensemble performs amid a major retrospective showing of the art of painter Roberta Eisenberg.  The program includes Beethoven, Ravel, Webern and Schubert.  Cal State Polytechnic.  Pomona. (310) 216-5861.  http://www.csupomona.edu/~kellogg_gallery/. – Feb. 4 – 7.  (Wed. – Sat.)  Jacky… Read More Picks of the Week: Feb 2 – 8