By Don Heckman  Los Angeles  – April 20. (Mon.)  Phil Norman Tentet. Norman’s collective of L.A.’s premium players, performing briskly swinging charts recalls the buoyant West Coast jazz of the ’50s and ’60s.  Charlie O’s.  (818) 994-3058.  www.charlieos.com    – April 21. (Tues.)  Kristen Korb Sextet. She sings, she swings, she plays the bass and celebrates… Read More Picks of the Week: April 20 – 26