 "Revolver" expanded the boundaries of pop music, revolutionised standard practices in studio recording, advanced principles espoused by the 1960s counterculture and inspired the development of psychedelic rock, electronica, progressive rock and world music.The album cover, designed by Klaus Voormann, combined Aubrey Beardsley-inspired line drawing with photo collage and won the 1967 Grammy Award for Best Album Cover, Graphic Arts.Aided by the 1987 international CD release, which standardised its content to the original Parlophone version, "Revolver" has surpassed "Sgt.