Bob Weir made a surprise appearance at last night’s Music Heals Benefit at his own Sweetwater Music Hall. Teaming up with Lukas Nelson, the duo delivered acoustic renditions of “K.C. Moan,” “Loose Lucy,” “Haiti” and “Dream Baby” which featured members of Hot Buttered Rum, who also performed later that evening.

The performance of “Haiti” was particularly poignant and relevant as the mission of Music Heals International is to bring music equipment and education to the children of Haiti. Also performing that night was the Doobie Decibel System.

Check out a photo gallery from the show on Relix.com.