Earth, Wind & Fire were one of the most musically accomplished, critically acclaimed, and commercially popular funk bands of the '70s. Conceived by drummer, bandleader, songwriter, kalimba player, and occasional vocalist Maurice White, EWF's all-encompassing musical vision used funk as its foundation, but also incorporated jazz, smooth soul, gospel, pop, rock & roll, psychedelia, blues, folk, African music, and, later on, disco. Lead singer Philip Bailey gave EWF an extra dimension with his talent for crooning sentimental ballads in addition to funk workouts; behind him, the band could harmonize like a smooth Motown group.