Bob Weir joined his cowboy songwriting partner Lukas Nelson on December 5 at Smiley’s Schooner Saloon in Bolinas, CA during his show with Promise of the Real.

As Deadheadland reports, Wier joined in the middle of the set for a trio of tunes including “Althea,” “The Other One” and a cover of “I Shall Be Released.”

Weir and Nelson posted a photo in the studio together along with longtime collaborator John Perry Barlow, noting that they were writing “cowboy songs” for Weir’s upcoming record that will also feature Josh Ritter, Joe Russo, members of The National and Yellowbirds.