Fifty years after the three-day concert made rock’n’roll history, a gargantuan, 38-disc set attempts to tell the full story of the event for the very first time. The mythological status of 1969’s Woodstock Music and Arts Festival can sometimes feel overpowering. The festival is the ultimate expression of the 1960s. Moments from the three-day concert have crystallized as symbols of the era, with details like Richie Havens’ acoustic prayer for freedom, Roger Daltrey’s fringed leather vest, or Jimi Hendrix’s “Star Spangled Banner” held up as sacred countercultural relics.