NPR Tiny Desk concerts aren't new so I don't know if they can qualify as "found" music, but I've really gone down a rabbit hole with them lately, so much good stuff in little 3-song bites with really good audio. I listened to this one last night and it brought a smiile to my face:
https://www.youtube.com/watch?v=IDksWTzZQ2c
As one of the comments says: "All i can think is u would never know these old guys are such a bunch of badasses if u saw them around a table at a Denny's"
Good job by the singer not falling off that little table btw.