Last night at the Wheeler Opera House in Aspen, CO, Yonder Mountain String Band’s Adam Aijala (guitar) and Ben Kaufmann (bass) performed as part of the Aspen Songwriter’s Festival. During the encore the duo were joined by Sam Bush on “Night Out,” followed by an appearance by John Oates on “Criminal.” The four musicians returned for a second encore, taking on a completely unplugged cover of cover of The Faces’ “Ooh La La.”

Bush and Oates will perform a duo set on Sunday as part of the festival’s “Brothers and Sons” event. Oates has also recently sat in with moe., Umphrey’s McGee, Karl Denson, Ivan Neville, the Omega Moos and other members of the jamband community.