I began to seriously listen to the Grateful Dead in 1973. This occurred because I had a good friend who was enamoured by the Dead's music, and in particular Garcia's musicianship.He was in SF during the "Summer of Love" in 1967, so he was witness to their evolution as a rock band. His admiration was only heightened by the way I was able to verbalize the genius of the band's playing. To please my friend,I may have overlooked some the minor flaws of JC's playing and the lethargy that the band as whole occasionally displayed in concert.
At this time, the Dead were heading into their most creative period which some critics claim ended with the Europe'72 tour. I have to disagree wit these claims. I was never the Deadhead that my friend was, but I understood his devotion to the band. He often claimed that few guitarist of the day had as many "musical ideas" as JC, though he acknowledged the great musicianship of Clapton, Townsend, and John McLaughlin. We both agreed that Hendrix was in a class by himself. I was never a big Hendrix fan, though he brought the art of the electric guitar to the limits of its capability.
In my opinion, Garcia and the Dead were synonymous with the ethos and culture of San Francisco in the 1970's. They were as much part of the beat generation as hippies. With JC as their maestro, the Dead played blues, country, Latin. gospel, rock, acid rock, and 40's and 50's swing. I always told my friend that there was a sadness, a sorror underneath the sound of Garcia's music. It possessed an "old world" Spanish timbre, which also was existential in its solitude. I often reminded me of paintings in Spanish missions churches of the "Mater Delarosa"....the sad mother weeping. It can be easily heard in songs like "Black Peter", "Stella Blue" "Deal" and to a degree in "Candyman" and "It Must Have Been the Roses" and some other of their less expansive tunes.
I think Garcia's genius was exemplified in his musicianship, and the ability to create segues into other realms of music, and musical genres. He was the greatest maestro of the type and style of rock music that was patentedly the Grateful Dead. One can only wonder what JC and the Dead would have been capable of, even after 2000 plus live concerts and 35 years of "playing in the band"