 1967 saw the Beatles release their definitive psychedelic statement in "Sgt.Pepper's Lonely Hearts Club Band", including the controversial track "Lucy in the Sky with Diamonds", the Rolling Stones responded later that year with "Their Satanic Majesties Request", and the Pink Floyd debuted with "The Piper at the Gates of Dawn".Key recordings included Jefferson Airplane's "Surrealistic Pillow" and the Doors' "Strange Days".