Natalie Portman hosts Dudamel Conducts a John Williams Celebration with the LA Phil on Great Performances Friday, July 24 at 9 p.m. on PBS (check local listings). Itzhak Perlman is the special guest in a gala opening night concert paying tribute to t... (more)he prolific film composer. The Los Angeles Philharmonic Music and Artistic Director Gustavo Dudamel conducts.