Phil Lesh, Bob Weir and Tim Flannery perform the National Anthem on Monday. Photo via Sweetwater’s Facebook page

Bob Weir’s friends and family treated him to a surprise 65th birthday party last night. The intimate affair took place at Weir’s recently reopened Mill Valley, CA club Sweetwater. About 100 of Weir’s friends attended the event, including Phil Lesh and Weir’s neighbor and pal Sammy Hagar.

The evening featured three segments of music. Jackie Greene and his band performed first, offering a set of mostly Grateful Dead chestnuts like “Bertha,” “Deal” and “Shakedown Street” with the help of Furthur/RatDog keyboardist Jeff Chimenti. After a short break, Greene, his band and Jeff Chimenti returned for another set of music with Lukas Nelson, who recently played Weir’s TRI studio and sat in with Furthur, on guitar. The musicians ran through a set of covers, including “One Way Out” and “The Sky is Crying.”

Weir himself took the stage at the start of the evening’s third set. The birthday boy joined Greene, his band and Chimenti for a take on “Sugaree” with Weir and Greene trading vocals. Then, Nelson closed the night with a solo acoustic set that included a number of Beatles and Neil Young covers.

Weir and Hagar will return to Sweetwater this Friday for a performance with The Mooncussers. The evening will benefit wounded veterans.