CSN may refer to:
CSN is a Crosby, Stills & Nash album released in 1977, the fifth album by the group, the second by the trio configuration and the first without Neil Young since his entry into the band. It peaked at #2 on the Billboard Top Pop Albums chart; two singles taken from the album, Nash's "Just a Song Before I Go" and Stills' "Fair Game" peaked at #7 and #43 respectively on the Billboard Hot 100. It is currently the trio configuration's best selling record, outselling their debut Crosby, Stills & Nash by 200,000 copies. It has been certified for quadruple platinum sales by the RIAA.
In the interim since their tour in the spring and summer of 1970 to support Déjà Vu, the band had only completed one project together, the 1974 reunion tour. David Crosby and Graham Nash had recorded three albums as a duo, with Crosby releasing a single solo album and Nash a pair. Stephen Stills pursued other projects including the release of four solo albums, a short career with Manassas that yielded two albums, as well as a tour and an album with Neil Young (which itself nearly became a CSNY project).
CSN is the eleventh album by Crosby, Stills & Nash, issued on Atlantic Records in 1991, not to be confused with the album of the same name released in 1977. A box set on four compact discs, it features material spanning 1968 through 1990 from their catalogue of recordings as a group in addition to selections from Crosby & Nash, Manassas, and their individual solo albums. It peaked at #109 on the Billboard 200, and has been certified platinum by the RIAA. The set is "dedicated to the loving memory of Cass Elliot, without whom most of this music may not have been made."
The presence of the group's occasional fourth member, Neil Young, is limited to fourteen tracks and only two of his compositions for the band, "Helpless" and "Ohio." Of its 77 tracks, 25 had been unreleased previously, although many were alternate takes, alternate mixes, or concert versions of previously issued songs. Highlights include a cover of the song "Blackbird" by The Beatles, the full-length take of "Almost Cut My Hair," and the demo of "You Don't Have to Cry," the first recording they made as Crosby, Stills & Nash.