Hit Parade is back for non-Slate Plus listeners! Upcoming episodes will be split into two parts, released two weeks apart. For full episodes on the day of release, sign up for Slate Plus and you'll also get The Bridge, our trivia show and deep dive into our subjects. slate.com/hitparadeplus.

In part two of our one-hit wonders show, we propose three rules to identify a one-hit wonder, which is not as easy as it sounds: Dexys Midnight Runners? They’re a one-hit wonder. Men Without Hats? Nope, not fair. Lou Reed? Yes. Marky Mark? No. In this episode, Chris breaks it all down, explaining why “Take on Me” is a pop classic but A-ha are still only one-hitters in America.

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