Columbia Records introduces the 33 1/3 LP (“long playing”) record at New York's Waldorf-Astoria Hotel[?], featuring 25 minutes of music per side, compared to the four minutes per side of the 78 rpm record, the previous standard.
... Phil Lesh, and in 1967 - the band's breakthrough year - another percussionist, Mickey Hart.
Playing originally as The Warlocks, and later "The Grateful Dead", they became ...