By Don Heckman Los Angeles – Aug. 2 (Tues.) Yes and Styx. Two of the classic rock franchises — still going strong — team up for a display of some of the archetypal music of the ’70s and ’80s. The Greek Theatre.  (323) 665-5857. – Aug. 3 – 7. (Wed. – Sun.) John Pizzarelli and… Read More Picks of the Week: August 2 – 7