For Paul McCartney, it all started in Liverpool in 1942. His dad was a professional musician and helped his son learn to play the guitar, and Paul taught himself the piano by ear. By the time he was 15, Paul had met John Lennon, who already had a band called the Quarrymen. Paul and George Harrison joined Lennon's band by 1958. After going through a few names, they settled on the Beatles and started touring widely as their success grew. They also picked up a new drummer, Ringo Starr, to complete their final foursome.