Woodstock Music & Art Fair (informally, Woodstock or The Woodstock Festival) was a music festival, billed as "An Aquarian Exposition", held at Max Yasgur's 600 acre (2.4 km²; 240 ha) dairy farm in the rural town of Bethel, New York from August 15 to August 18, 1969. Bethel, in Sullivan County, is 43 miles (69 km) southwest of the town of Woodstock, New York, in adjoining Ulster County.
Thirty-two of the best-known musicians of the day appeared during the sometimes rainy weekend in front of nearly half a million concertgoers. It is widely regarded as one of the greatest moments in popular music history and was listed on Rolling Stone's 50 Moments That Changed the History of Rock and Roll.
The event was captured in a successful 1970 documentary movie, Woodstock; an accompanying soundtrack album; and Joni Mitchell's song "Woodstock", which commemorated the event and became a major hit for Crosby, Stills, Nash & Young.