Dinosaur Jr. are in the middle of a star-studded week-long residency at the Bowery Ballroom — special guests so far have included Kurt Vile, Kim Gordon, Henry Rollins, Steve Gunn, Eleanor Friedberger, Fred Armisen, Lee Ranaldo, Jeff Tweedy, and Charles Bradley. Last night, for their fourth show in the run, they brought out Bob Mould, who performed “Freak Scene” with the band, then covered Hüsker Dü’s “In A Free Land.” They also did Neil Young’s “Cortez The Killer” again, which Mould joined them on alongside previously featured guests Lee Ranaldo and Fred Armisen. Watch some video of Mould’s appearance at the gig below.

A video posted by Dan Kilberg (@dankilberg) on Dec 6, 2015 at 9:05pm PST

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A video posted by Erica K. Landau (@ericakland) on Dec 6, 2015 at 10:27pm PST