Phil Lesh sat in with Los Lobos when the band played his Terrapin Crossroads music venue in San Rafael, CA on Sunday night. The bassist joined the group for a rendition of the Grateful Dead’s “Bertha,” a song that has been in the Los Lobos repertoire since they first covered it for the Deadicated tribute album in 1991. In addition to the Grateful Dead tune, last night’s show also featured covers of “Hey Joe” and the Jimi Hendrix original “Are You Experienced.”