During the sometimes rainy weekend, 32 acts performed outdoors before an audience of 400,000 young people. The festival is also widely considered to be the definitive nexus for the larger counterculture generation. The event was captured in the 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.