Last night at Sweetwater Music Hall in Mill Valley, CA, Grateful Dead guitarist Bob Weir joined Ivan Neville and his Dumpstaphunk brethren for very special sit-in during the NOLA funk acts set. The current Dead & Co. guitarist joined the group for a cover of “Big Chief,” a song written by Eric King but popularized by Professor Longhair. Weir stuck around for a super funky version of “Shakedown Street” that had the place rocking and rolling through the night.

The band shared videos for both of those collaborations on their Facebook page, which you can watch below!