“The Art of the Score: Film Week at the Philharmonic” starts September 16th at Avery Fisher Hall. In “La Dolce Vita: The Music of Italian Cinema,” conductor Alan Gilbert is joined by Joshua Bell, Renée Fleming, and Josh Groban. “Charlie Chaplin’s Modern Times: The Tramp at 100” celebrates the centennial of The Little Tramp and the 125th anniversary of Chaplin’s birth.