From 1976 and his quite wonderful Cardiff Rose LP (produced by Mick Ronson) please enjoy Roger McGuinn and friends as they basically invent...The Clash.
I should add, just to increase the Oh Wow! factor here, that the song was co-written by Kris Kristofferson and Bobby Neuwirth.
I'm pretty sure I wrote about this at some point seven or eight years ago, when both the world and this blog were young, but I had completely forgotten about it until the other day, when the incomparable Willard's Wormholes posted the entire album at his website. A tip of the PowerPop hat obviously.