A breakthrough mega hit that defied the odds and stood the test of time, and a band that might not have. Or maybe they did. Honestly, it's not obvious. Groove Is In The Heart, originally by Deee-Lite, covered by Blues Traveler.

Outro music is the theme song from Green Acres, sung by Eddie Albert and Eva Gabor.

An influential band's signature song that found its place for multiple generations, and a cover by an artist who seems to look into our world through her own special lens. Rasputin, originally by Boney M, covered by AURORA.

Outro music is In The Dark Of The Night, which is Rasputin's villain song in Anastasia. Even better, it's sung for the film by Jim Cummings, who is also the voice of Winnie the Pooh. Take a moment to collect your thoughts.

A modern and compelling take on protest songs that doesn't lean on outrage so much as "there but for the grace of God", and a cover by an artist who redefined what this kind of song can do in the world. Beautiful Strangers, originally by Kevin Morby, covered by Mavis Staples.

Outro music is I Ain't Got No Home In This World Anymore by Woody Guthrie.

We look at one of the best songs from one of the best debut albums ever, and follow with a pair of covers that teach us a lot about how music works and what it really means in the world. Honestly, we didn't see this one coming. Baby Can I Hold You, originally by Tracy Chapman, covered by Luciano Pavarotti, and by Billy Ocean.

Outro music is The Ride of the Valkyries by Wagner, as performed by the Royal Philharmonic Orchestra.

A song that defined a band, in spite of their many successful reinventions, and a cover by two unlikely artists — or at least ones we thought were unlikely. Sweet Emotion, originally by Aerosmith, covered by Leo Kottke and Mike Gordon.

Outro music is Jack Fig by Leo Kottke, because you need to hear what he's about.

Lots of country music is sad stories. This is that, and there's a sad story under it, but it has way more at work than you might think — and it launched one of the most important careers in the history of country music. Delta Dawn, originally by Alex Harvey, covered by Tanya Tucker.

Outro music is Eighteen Wheels and a Dozen Roses by Kathy Mattea.

The song that redefined out popular music shapes culture, and a cover that soothes your mind. Like A Prayer, originally by Madonna, covered by Sarah Menescal.

Outro music is Here Comes The Sun, also by Sarah Menescal.

A song that hit its stride in a big way with online success by an artist who has a knack for that, and a cover that keeps the soul and impact of the song while still reinventing it. Anxiety, originally by Doechii, covered by Nova Twins.

Outro music is Werewolves of London by Warren Zevon. Or is that Kid Rock? No, we'd never do that to you.