Foo Fighters’ Concrete and Gold tour rolled on last week with a pair of shows out West with stops in Nampa, ID and Casper, WY where they were joined by old friend and collaborator Bob Mould of Hüsker Dü.

Mould entered the studio with the Foos for their recording sessions around the 2011 release of Wasting Light to play guitar and add vocals to the song “Dear Rosemary,” which he played with the band last week marking the first time the tune has been played since 2015.

Watch the collaboration below.