Crosby Stills Nash-CSN (1969)

This was one of the albums that raised the most expectations when it was published in 1969, and that is that David Crosby, Stephen Stills and Graham Nash had abandoned their respective already established and enormously popular bands to join forces under the name of CSN.
These three bands were The Byrds, Buffalo Springfield and The Hollies, a fact that had never happened before, causing stupor on the one hand and surprise on the other.
Each of those bands lived at the end of the sixties moments of splendor, on the one hand The Byrds had released the album "The Notorious Byrd Brothers" that although it had not surpassed magnificent works like its first three works, it was a remarkable work of folk rock, on the other hand the Buffalo Springfield's had released the wonderful "Buffalo Springfield Again" and their final work "Last Time Around" and finally The Hollies came from publishing their work "Butterfly" a minor album that nevertheless kept them in the top of the hit lists.
They were one of the first super bands in history, alongside the British Cream, giving rise to a brief fad of the late sixties introducing the concept of rock musicians as free agents to form supergroups.
His first album named after the band, is a compendium of melodies and vocal harmonies, which together with the guitar play and the chord sequences of the songs served to get the general public into the field of acoustics and folk rock.
Country rock and folk rock from Crosby and Stills were the perfect counterpoint to Nash's British pop-rock style.
The unspeakable tune of Nash's travels on "Marrakesh Express", and Stills tribute to Judy Collins on "Suite Blue Eyes" catapulted them to the top of the charts, in part also because of her hippie thoughts and counterculture.
The album would reach millionaire sales and a Grammy for the best album in 1970.