Carry On is a 4-CD career retrospective box set by Stephen Stills, including tracks with the vocal folk rock supergroup named what?
Carry On (Stephen Stills album): Carry On is a 4-CD career retrospective box set by Stephen Stills (not to be confused with the CSN compilation released in 1991). Carry On (Stephen Stills album):  It features highlights from his career as a solo artist and with groups including The Au Go Go Singers, Buffalo Springfield, Manassas, and various permutations of CSN&Y. 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.
Crosby, Stills, Nash & Young