I would say 1967 was the highlight of R&R. Its was fresh and pure.
Beatles - Sgt Peppers
Hendrix (debut) - Are you Experienced (like a greatest hits)
Doors (debut) - Doors
Pink Floyd (Debut) - Piper at the Gates of Dawn
Jefferson Airplane(debut) - Surrealistic Pillow
Kesey and Leary made the whole experience even better
Monterrey Pop Festival was happenng!