I've recently discovered a bootleg live performance of a band I really like that was recorded with songs that I've never heard, and a lot of variety on the ones I already know. It's the Velvet Underground playing at Valley Dale Ballroom in 1966. Here's one of the songs that was played differently than on the album, Run Run Run from The Velvet Underground and Nico https://www.youtube.com/watch?v=xw6ATQgMU5g
It has a cooler, laid back vibe to it than the album version.
I'm pretty happy I found this.