This week on “Picture Perfect,” it’s an hour of dystopian visions – glimpses of a bleak future rendered hopeful, in large part, by the music. Join Ross Amico for selections from “Fahrenheit 451” (Bernard Herrmann), “Wall-E” (Thomas Newman), “A.I. Artificial Intelligence” (John Williams), and “Metropolis” (Gottfried Huppertz), this Friday at 6 pm.