John LennonLen·non, John /ˈlenən/ (1940–80) a British singer and songwriter, who was a member of The Beatles, and wrote most of their songs with Paul McCartney. After The Beatles separated, he continued to write and sing songs, especially about peace and love, including Give Peace a Chance and Imagine. He was married to the artist Yoko Ono. He was shot and killed outside his home in New York City.