Background: Philip Chapman Lesh (born March 15, 1940) is a musician and a founding member of the Grateful Dead, with whom he played bass guitar throughout their 30-year career. After the band's disbanding in 1995, Lesh continued the tradition of Grateful Dead family music with side project Phil Lesh and Friends, which paid homage to the Dead's music by playing their originals, common covers, and the songs of the members of his band. Lesh operates a music venue called Terrapin Crossroads. He scaled back his touring regimen in 2014 but continues to perform with Phil Lesh & Friends at select venues.
Context: Lesh was an innovator in the new role that the electric bass developed during the mid-1960s. Contemporaries such as Casady, Bruce, James Jamerson and Paul McCartney adopted a more melodic, contrapuntal approach to the instrument; before this, bass players in rock had generally played a conventional timekeeping role within the beat of the song, and within (or underpinning) the song's harmonic or chord structure. While not abandoning these aspects, Lesh took his own improvised excursions during a song or instrumental. This was a characteristic aspect of the so-called San Francisco Sound in the new rock music. In many Dead jams, Lesh's bass is, in essence, as much a lead instrument as Garcia's guitar.  Lesh was not a prolific composer or singer with the Grateful Dead, although some of the songs he did contribute--"New Potato Caboose", "Box of Rain", "Unbroken Chain", and "Pride of Cucamonga"--are among the best-known in the band's repertoire. Lesh's high tenor voice contributed to the Grateful Dead's three-part harmony sections in their group vocals in the early days of the band, until he largely relinquished singing high parts to Donna Godchaux (and thence Brent Mydland and Vince Welnick) in 1976 due to vocal cord damage from improper singing technique. In 1985, he resumed singing lead vocals on select songs as a baritone. Throughout the Grateful Dead's career, his interest in avant-garde music remained a crucial influence on the group.  In 1994, he was inducted into The Rock and Roll Hall of Fame as a member of the Grateful Dead.
Question: what was his first published album. Whats the answer?