Today on The Gist, we listen back to Billboard hits from 1965. Our regular guest Chris Molanphy explains why many of these songs remain utterly immortal. He writes Slate’s Why Is That Song No. 1 column. For the Spiel, more about the sexagenarian gyronaut who panicked the Washington press corps. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at http://www.slate.com/gistplus.