Carry On is a 4-CD career retrospective box set by Stephen Stills, including tracks with the vocal folk rock supergroup named what?
Crosby, Stills, Nash &amp; Young: Crosby, Stills & Nash (CSN) was a vocal folk rock supergroup made up of American singer-songwriters David Crosby and Stephen Stills and English singer-songwriter Graham Nash. Crosby, Stills, Nash &amp; Young:  They were known as Crosby, Stills, Nash & Young (CSNY) when joined by Canadian singer-songwriter Neil Young, who was an occasional fourth member.
i don't know