Rarely has a band concentrated so many incredibly talented songwriters at the same time, which is probably why the band lasted only from 1968 to 1970. British folksinger Graham Nash, ex-Byrds David Crosby and Buffalo Springfield bandmates Neil Young and Stephen Stills all shared vocal and guitar duties, but Stills’ fuzzed-out blues solos remain the high point of the only studio album they did together, Deja Vu.