The festival is regarded as a pivotal moment in popular music history, as well as a defining event for the
silent and
baby boomer generations. The event's significance was reinforced by
a 1970 documentary film, this
soundtrack album, and a
song written by
Joni Mitchell that became a major hit for both
Crosby, Stills, Nash & Young and
Matthews Southern Comfort. Musical events bearing the Woodstock name were planned for anniversaries, including the
tenth,
twentieth,
twenty-fifth,
thirtieth,
fortieth, and
fiftieth. In 2004,
Rolling Stone magazine listed it as number 19 of the 50 Moments That Changed the History of Rock and Roll. In 2017, the festival site became listed on the
National Register of Historic Places.