This subset of Crosby, Stills, Nash Young featured David Crosby and Graham Nash relying on their sweet harmonies and strong songwriting. The duo lasted from 1972 to the more-or-less permanent re-forming of Crosby, Stills Nash in 1977. They produced a trio of well-received albums, but also re-formed occasionally in subsequent years, releasing the self-titled double-album Crosby Nash in 2004. David Crosby died on January 18, 2023 at the age of 81. ~ William Ruhlmann, Rovi