I can do you better than just 1 new song, Lauryn Hill's Unplugged is entirely new songs. She's a complicated artist, especially when it comes to live performances, and it didn't lead to any hits but it's certainly unique.

Then there's also artists doing covers that wouldn't be released on any studio album, like Nirvana covering David Bowie's The Man Who Sold the World or Florence + The Machine covering Johnny Cash's Jackson (and bringing up Josh Homme from Queens of the Stone Age to duet for that song)

I was just listening to Miseducation yesterday, I don't know how I've never heard of this. Thanks! Exactly what I was trying to describe.

Be warned, it's nothing like Misseducation and is not considered good.

Also, doing some extra digging Pearl Jam played State of Love and Trust on their unplugged performance a few months before the studio version was released as a single for a movie soundtrack

Thanks for the warning, I'll go in with an open mind!

Yeah, that's my favorite version of State of Love and Trust. I appreciate how different they made the songs for that performance, especially Porch.

On their unplugged, twenty one pilots recreated a couple of their songs on the spot using looping devices and such, and made entirely new versions of them. Not a ‘classic’ unplugged but I guess it counts as new songs?

looping devices

unplugged

nope

They made a lil speech beforehand about it, saying MTV unplugged had become less about being ‘unplugged’ and more about seeing the bands in a different light.

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Lol yeah it’s not unplugged but it’s still a fantastic and unique performance that forces them to put their musicianship in the foreground

Fair enough. Plus, a couple of the songs they played were just not that great, although a couple of them did stand out.

Nirvana Unplugged was primarily covers and songs that weren’t hits. I remember hearing the producers saying they were expecting a standard hits-based set list and had they known what was going to happen, they would have recorded it differently.