Childhood Experiences: Lennon's childhood experiences, especially his relationship with his mother, Aunt Mimi who raised him, and the influence of early rock 'n' roll music shaped his musical interests and songwriting.
Literary Influences: Lennon was an avid reader and drew inspiration from literature. He was particularly fond of the works of Lewis Carroll, James Joyce, and Dylan Thomas. Their use of language, imagery, and surrealism influenced his lyrics.
Social and Political Activism: Lennon was deeply involved in social and political causes. His involvement in the Vietnam War protests, civil rights movements, and anti-establishment sentiments of the 1960s became prevalent themes in his music and lyrics.
Collabration with Paul McCartney: Lennon's songwriting partnership with Paul McCartney proved essential to his musical development. Their creative synergy produced some of the most iconic songs in history, combining Lennon's lyrical introspection with McCartney's melodic craftsmanship.
Experimental Sounds: Lennon was also influenced by various musical styles, ranging from classical to folk, avant-garde, and electronic music. His experimentation with sounds, production techniques, and unconventional instruments can be heard in his solo work and with The Beatles.
World Music: As Lennon's career progressed, he became interested in world music, particularly Indian music. The use of sitars, tablas, and other Eastern instruments in his music was influenced by his spiritual journey and fascination with different cultures.
Relationship and Personal Struggles: Lennon's relationships, including his marriage to Cynthia Lennon and Yoko Ono, and his personal struggles with addiction, depression, and self-doubt, contributed to the emotional depth and vulnerability expressed in his music.