Bob Weir and folk singer Maria Muldaur sat in with the Preservation Hall Jazz Band at Sweetwater Music Hall in Mill Valley, CA on Friday night. It was the third time that Weir—who is a part owner of the venue—joined an act on stage at the club in less than a week. As previously reported, the guitarist also sat in with Blackberry Smoke on Saturday, April 14 before joining Taj Mahal for his set on Wednesday, April 17.

Both Weir and the Preservation Hall Band will be performing at this year’s Lockn’ festival, so this might not be the last time that they end up playing together.