By Don Heckman Los Angeles – Sept. 30 (Wed.) Otmaro Ruiz and John Belzaguy Duo. Expect a musically stirring encounter between Venezuela-born Ruiz’s rich textured, Latin-tnged piano and Belzaguy’s sturdy, rhythmically versatile bass. Vibrato Grill Jazz…etc.  (310) 474-9499. – Sept. 30. (Wed.) Bob Sheppard Quartet. W. Larry Koonse, guitar, Gabe Noel, bass and Joe LaBarbera,… Read More Picks of the Week: Sept. 28 – Oct. 4