Sean Taro Ono Lennon (Japanese name Tarō Ono; born October 9, 1975) is an American musician and composer. He is the only child of John Lennon and Yoko Ono and the younger half-brother of Julian Lennon. He is also the half-brother of Kyoko Chan Cox (their mother is Yoko Ono.) His godfather is Sir Elton John.
Sean Lennon was born in New York City on October 9, 1975, his father's 35th birthday. He holds English and Irish descent on his father's side and Japanese descent on his mother's side. Julian Lennon is his half-brother and Kyoko Chan Cox is his half-sister. After Sean's birth, John became a househusband, doting on his young son until his murder in 1980. Sean attended kindergarten in Tokyo, and was also educated at the exclusive private boarding school Institut Le Rosey in Rolle, Switzerland, and earlier at New York's private Ethical Culture Fieldston School and Dalton School. He later attended Columbia University, though for only three semesters before dropping out to focus on his music career.
His parents kickstarted his musical career: his debut into the music world came at the age of five, reciting a story on his mother's 1981 album Season of Glass. From childhood into his teen years, Sean continued to collaborate with his mother, contributing vocals and receiving production credit on her solo albums It's Alright (I See Rainbows), Starpeace and Onobox. At 16 Sean co-wrote the song "All I Ever Wanted" with Lenny Kravitz for his 1991 album Mama Said. By 1995 Sean had formed the band IMA (with Sam Koppelman and Timo Ellis) to play alongside his mother on her album Rising. Sean also made appearances in film, featured in the cast of Michael Jackson's 1988 Moonwalker and portraying a teenager experiencing visions of various M. C. Escher paintings in Sony's 1990 promotional short-film Infinite Escher.