Watch Dinosaur Jr. Cover Neil Young's 'Cortez the Killer' With Fred Armisen and Sonic Youth's Lee Ranaldo

Last night, Dinosaur Jr. played their second in a series of seven 30th anniversary concerts at New York City’s Bowery Ballroom. For their first night (Thursday, December 3), they brought out guests like Steve Gunn, Eleanor Friedberger, Kim Gordon, and Kurt Vile. On Friday night, however, the ’90s alt-rock heroes brought out Portlandia star Fred Armisen on a…