The Rolling Stones are an English rock band formed in London in 1962. As a diverging act to the popular pop rock of the early 1960s, the Rolling Stones pioneered the gritty, heavier-driven sound that came to define hard rock.[1] The band’s first stable line-up consisted of bandleader Brian Jones (guitar, harmonica, keyboards), Mick Jagger (lead vocals, harmonica), Keith Richards (guitar, vocals), Bill Wyman (bass guitar), Charlie Watts (drums), and Ian Stewart (piano), the last of whom was removed from the official line-up in 1963, but continued to work with the band as a contracted musician until his death in 1985.