The Godfather Part II, Toy Story 2—the list of sequels superior to the originals is short. But save a spot for At San Quentin, the 1969 follow-up to Johnny’s landmark At Folsom Prison that more than matches its predecessor’s emotional dynamics and raucous musicality, whether the Man in Black is offering comic relief with “A Boy Named Sue” or practically daring the prisoners to riot with the withering “San Quentin.” This two-CD, one-DVD box set collects the entire concert from which the original album was drawn, along with an astonishing British TV documentary filmed that day.