Conor Oberst and friends played a headlining set at the Ottawa Folk Festival over the weekend, closing out the gig with a pair of decidedly non-folk collaborations (their second onstage team-up of the year): “Arienette” and “Road To Joy” featuring the axe work of alt-rock hero/activist Tom Morello. NJ Underground has some clips, but here’s decent front-row footage of Oberst’s glowing introduction before the Rage Against the Machine/Nightwatchman guitarist takes an inspired, blistering solo on Bright Eyes’ 2000 Fevers and Mirrors cut.