We caught the Seeger Sessions tour in Manchester. We'd been away and came back to find it was on imminently but we had no tickets, the box office had none and the internet prices were a bit steep. I can't recall exactly why we missed news of the show but I contacted someone I've met who'd organised some Springsteen fan things in the past and he was able to turn up a couple of tickets - not the best seats but not too bad. I was really glad we made the effort because it was a fun show.
In Berlin recently, Springsteen opened with "When I Leave Berlin", a song written by an old folkie called Wizz Jones - in fact, the title song from one of his CDs. I saw Wizz Jones quite a few times in my youth and he was a classic folkie - bearded, spent his life playing mainly small folk clubs around the country, used to go hitch-hiking down to the south of France and to Paris, busked a bit, played all sorts of songs from here, there and everywhere, wrote a few himself, was in folk-cum-bluegrass duo with someone called Pete Stanley for a while (saw them, too) and has been in and around the British folk scene for decades.
I'll stick him the "Unknown Greats" thread with a reference to this post.