In 1970, a young farmer named Michael Eavis opened his 150-acre farm to 1,500 people who paid one pound each to watch a handful of pop and folk stars perform all weekend long, and the Glastonbury Festival was born. Julien Temple has spent the past few years collecting footage from every single Glastonbury Festival, ranging from outtakes from the film Nicolas Roeg made about the 1971 event to amateur home videos collected from the attendees themselves. Interweaving images of impromptu art happenings, skeptical locals, and stirring performances by music legends, Glastonbury chronicles the evolution of the longest-running music festival in the world.