According to family spokesperson Michael Pagnotta, Lang died in New York on Saturday 8 January from a rare form of Non-Hodgkin’s lymphoma.
Lang grew up in Brooklyn before entering a career in concert promotion in the 1960s.
He promoted the 1968 Miami Pop Festival, which drew 25,000 attendees and had a line-up including Jimi Hendrix and Frank Zappa.
Lang then moved to Woodstock, New York. Along with co-founders John Rosenman, Artie Kornfeld and John P Roberts, he went on to create the famous musical festival, Woodstock, the first edition of which was held at farmer Max Yasgur’s dairy farm near New York in 1969.
A whopping total of 400,000 attendees showed up to watch artists such as The Grateful Dead, The Who, Santana, and Sly and the Family Stone.
Entry to the festival became so congested that producers decided on a whim to turn it into a free event. The New York State Thruway was shut down and the festival – which was put on at the height of the hippie movement – has gone down as one of the most seminal events in the history of music.
A popular 1970 documentary, Woodstock: 3 Days of Peace & Music, was made about the event.
Woodstock was revived in 1994 and 1999. A planned Woodstock 50 festival in 2019 was cancelled after a series of permit and production issues, venue relocations, and artist cancellations.
Lang also owned and ran the label Just Sunshine Records and managed such artists as Joe Cocker, and Rickie Lee Jones.
He is survived by his wife Tamara, their sons Harry and Laszlo, and his daughters LariAnn, Shala, and Molly.