Final answer:
Keith Richards played several instruments, but he is primarily known as a guitarist in The Rolling Stones.
Step-by-step explanation:
Keith Richards played several instruments, but he is primarily known as a guitarist. He played the electric and acoustic guitar in the band The Rolling Stones, and his guitar playing is a key element of their signature sound.
In addition to the guitar, Richards also played other instruments such as the bass guitar, piano, and harmonica. He often incorporated these instruments into the band's live performances and recordings. Richards' guitar playing style is characterized by his use of open tunings, powerful rhythm playing, and memorable guitar riffs, which have made him one of the most influential guitarists in rock music.