How old was mick jagger when he joined the beatles?

Mick Jagger never joined The Beatles; he is the lead singer of The Rolling Stones, a separate band that formed in 1962. The Beatles were formed in 1960, and while both bands were contemporaries and had a significant impact on rock music, they remained distinct entities throughout their careers. Jagger was born on July 26, 1943, and The Beatles' first album was released in 1963.