A song that seemed to come out of nowhere and take over the whole world is a lot more than just well formulated pop, and a cover from a secret band. Somebody That I Used To Know by Gotye featuring Kimbra, covered by Army of Three.

Outro music is The Way I Am by Ingrid Michaelson.

A debut single that put the biggest possible flag in the ground, and a cover that shows up with its own ideas. Mr Brightside, originally by The Killers, covered by Hauskey.

Outro music is Elmo’s Song, by Elmo featuring Big Bird and Snuffy. Yes, it fits.

A song that was a point of transition which lead to a future that nobody expected, least of all the band behind it, and a perfect tribute. Southern Accents, originally by Tom Petty and the Heartbreakers, covered by Dolly Parton.

Outro music is Rebels, also by Tom Petty and the Heartbreakers, and you can’t tell us that isn’t a great line.

A song that perfectly captures a historical moment that’s coming around to bite us again, and a cover that gets it all wrong in the rightest possible way. Video Killed The Radio Star, originally by The Buggles, covered by The Presidents Of The United States Of America.

Outro music is Cleveland Rocks, also by The Presidents Of The United States Of America.

We always love a song with a complicated origin story, and here we get to pay tribute to an amazing songwriter and still indulge our favorite plot twists. Help Me Make It Through The Night, originally released by Percy Sledge, with versions by Kris Kristofferson, and by Gladys Knight and the Pips.

Outro music is Jump In The River by Sinead O’Connor — and if you don’t know about the connection between Kris Kristofferson and Sinead O’Connor, you need to dig into that, because it’s amazing.

A lively song from a young band that shows a lot more musical maturity than you might expect, and a cover by an equally young band that knows what they’re about, even if the industry isn’t ready for it yet. Going Down To Liverpool, originally by The Waves (who had not yet given Katrina top billing), covered by The Bangles.

Outro music is Walking On Sunshine, also by Katrina and the Waves. Let us know if it helps you figure out who’s actually singing in the first song, because we’re still confused.

It’s hard to find a song - or a singer - who nails it better than this, which makes covering it an impossible task. We found a band that did it. Someone Like You, originally by Adele, covered by Water From Your Eyes.

Outro music is Love at the Five and Dime, by Nanci Griffith — and you should really go back and check out that episode if you missed it the first time.

An iconic song with an origin story that defies all understanding, and a cover by a singer with more talents than any six people should be trusted with. All The Young Dudes, originally by Mott the Hoople, covered by Bruce Dickinson.

Outro music is Bang a Gong, by T.Rex, who makes a surprise appearance in this episode — let us know if you spot it.