Bon Iver’s Justin Vernon and the National’s Aaron Dessner threw their annual Eaux Claires festival in Eau Claire, Wisconsin this weekend. Way back in 2009, the two of them teamed up under the name Big Red Machine to record a song for the great Dark Was The Night charity compilation, and yesterday, they played a whole set under that name, debuting a bunch of new music. They also performed together in an extended jam session called the People’s Mixtape. Watch some fan-shot footage of their performance below.