Man, I wished I worked at NPR so I could see all these concerts.
The latest is from The Swell Season. That would be Glen Hansard and Marketa Irglova of Once fame.
They have a new album coming out, called Strict Joy, in late October.
I'm listening/watching as I write this and it's sounding/looking pretty great. According to some of the comments, the version of "When Your Mind's Made Up" (a highlight from Once) is amazing.