On Revolver

Prior to the recording of Revolver, the Beatles had a solid sound. However, they had not had that band-defining break through moment. As their relationship with their producer George Martin, and his awareness of the sound of different studios grew, so did their sound and potential. With Martin selecting studios based on their own sounds, and utilizing things such as a doubled string quartet to fill the sound, the roof was no longer high enough. In particular, the song "Tomorrow Never Knows" which is known for using processed vocals, looped tape effects and reverse guitar. The song Tomorrow Never Knows was inspired the Timothy Leary book The Psychedelic Experience: A Manual Based on The Tibetan Book of the Dead, while the title was developed by Ringo Star.