Beck, as he has done a number of times now, appeared at a music/comey night at the Largo in LA. This one wasn't hosted by Judd Apatow, like his usual appearances are, but instead Fred Armisen.
The setlist is known only because the Largo posted a picture of the handwritten set on Instagram; it is not known how well Beck stuck to it or not.
Blake Mills seems to have joined Beck on guitar on at least some of the songs, and Fred Armisen played drums too. (The clip I saw had them both on "Debra" at least.)