In Part 2 of this episode of Hit Parade, Chris Molanphy continues to demonstrate a weird chart phenomenon he calls The AC/DC Rule. Hit Parade episodes are now split into two parts, released two weeks apart. For the full episode right now, sign up for Slate Plus and you'll also get The Bridge, our Trivia show and bonus deep dive. Click here for more info. What was the only No. 1 album by Jimi Hendrix? How about the first No. 1 by Billy Joel? Jackson Browne? Pat Benatar? Pearl Jam? Lady Gaga? In all cases, the answer isn’t obvious—it’s not the album you know best, the one with the most hits on it. It’s the album after that classic that goes to No. 1. And there’s no better example than AC/DC, the Australian-by-way-of-Scotland hard rock band that’s sold more than 20 million copies of Back in Black. But it was their next album (can you name it?) that topped the Billboard album chart. Just as less-good movie sequels open better at the box office than classic first installments, follow-up albums often chart higher than their slow-growing but hit-packed predecessors. Some of the rock and pop legends who fell prey to this chart phenomenon might surprise you…might just leave you shook all night long. Podcast production by Asha Saluja. Learn more about your ad choices. Visit megaphone.fm/adchoices