Curtis Armstrong

Like the Winchesters, rock ‘n’ roll never dies on Supernatural. The titans of ’70s FM radio are the fuel — or grace, if we’re staying on brand — of the long-running CW series. Kansas, Skynyrd, Seger, and countless classic rock superstars have all scored Sam and Dean’s adventures for 15 seasons. Hell, their songs are often even the names of the episodes. No, classic rock is a part of the show’s DNA, and that DNA largely belongs to series creator Eric Kripke. As he explained way, way back in 2007, “All of my friends call me ‘Old Man Kripke’ because I don’t listen to a band past 1980. That’s why Dean’s music always wins out because I hate so much modern music that I can’t bear to listen to it in the editing room.” In other words, driver picks the music, shotgun shuts his cakehole, right? That...