Crosby and Stills had performed a tune together, and Nash who had been a part of a band who specialized in harmony singing joined in. The group formed after the three principles David Crosby late of the Byrds, Stephen Stills formerly of Buffalo Springfield, and ex-member of British Invasion favourites The Hollies, Graham Nash met at a party.
It’s “Suite: Judy Blue Eyes”, and epic length slab of prime ’60s folk rock as taken from the then newly formed band on their self-titled debut record released in the spring of 1969. Listen to this track by three-part harmony supergroup CSN, or rather Crosby, Stills & Nash.