Crosby, Stills, Nash & Young - Artist Art Gallery - wikipedia
Crosby, Stills & Nash (CSN) is a folk rock supergroup made up of David Crosby, Stephen Stills and Graham Nash. They are also known as Crosby, Stills, Nash & Young (CSNY) when joined by occasional fourth member Neil Young.
They are noted for their intricate vocal harmonies, often tumultuous interpersonal relationships, political activism, and lasting influence on US music and culture
Prior to the formation of CSN, each member of the band had belonged to another prominent group. David Crosby played guitar, sang and wrote songs with the Byrds; Stephen Stills and had been a guitarist, keyboardist, vocalist and songwriter in the band Buffalo Springfield (which also featured Neil Young); and Graham Nash had been a guitarist, singer and songwriter with the Hollies.