Step 1 : Introduction to the question "Who was the last act at the famous three-day Woodstock festival in 1969? "
The Woodstock Music & Art Fair—informally, the Woodstock Festival or simply Woodstock—was a music festival attracting an audience of over 400,000 people, scheduled over three days on a dairy farm in New York from August 15 to 17, 1969, but ultimately ran four days long, ending August 18, 1969
