Niklas from www.nicolaidunger.tk reports that Nicolai Dunger made a surprise appearance during the Bonnie 'Prince' Billy (Will Oldham) set at the Accelerator show in Stockholm the other day. They sang a slow version of the song "Hey Mama" together and it was said to be awesome. He apparently did the same thing the night before in Göteborg, too. Anyone record it? That track comes from the album that Nicolai did together with Mr. Oldham over at his home studio in Kentucky called "Tranquil Isolation".