Neil Percival Young is a Canadian and American singer and songwriter. After embarking on a music career in Winnipeg in the 1960s, Young moved to Los Angeles, joining the folk-rock group Buffalo Springfield. Since the beginning of his solo career, often with backing by the band Crazy Horse, he has released critically acclaimed albums such as Everybody Knows This Is Nowhere (1969), After the Gold Rush (1970), Harvest (1972), On the Beach (1974), and Rust Never Sleeps (1979). He was also a part-time member of Crosby, Stills, Nash & Young, with whom he recorded the chart-topping 1970 album Déjà Vu.

Crosby, Stills & Nash (CSN) was a folk-rock supergroup made up of the American singer-songwriters David Crosby and Stephen Stills and the English singer-songwriter Graham Nash. When joined by the Canadian singer-songwriter Neil Young, they were called Crosby, Stills, Nash & Young (CSNY). They are noted for their intricate vocal harmonies and lasting influence on American music and culture, their political activism and their tumultuous relationships.