By Don Heckman Los Angeles – June 5. (Wed.) Barbara Morrison.  Despite her difficult medical problems, the courageous, musically versatile Ms. Morrison continues to make her ever-appealing singing available to Los Angeles audiences.  Herb Alpert’s Vibrato Grill Jazz…etc.   (310) 474-9400.  She also performs at Steamers in Fullerton on June 7 & 8 (Fri. & Sat.).… Read More Picks of the Week: June 5 – 9