Lennon–McCartney in the context of Sony Music Publishing

The Beatles were an English rock band formed in Liverpool in 1960. The core lineup of the band comprised John Lennon, Paul McCartney, George Harrison and Ringo Starr. They are widely regarded as the most influential band in popular music and were integral to the development of 1960s counterculture and the recognition of popular music as an art form. Rooted in skiffle, beat and 1950s rock 'n' roll, their sound incorporated elements of classical music and traditional pop in innovative ways. The band also explored music styles ranging from folk and Indian music to psychedelia and hard rock. As pioneers in recording, songwriting and artistic presentation, the Beatles revolutionised many aspects of the music industry and were often publicised as leaders of the era's youth and sociocultural movements.

Led by primary songwriters Lennon and McCartney, the Beatles evolved from Lennon's previous group, the Quarrymen, and built their reputation by playing clubs in Liverpool and Hamburg, Germany, starting in 1960. The core trio of Lennon, McCartney and Harrison, together since 1958, went through a succession of drummers before inviting Starr to join them in 1962. Manager Brian Epstein moulded them into a professional act, and producer George Martin developed their recordings, greatly expanding their domestic success after they signed with EMI and achieved their first hit, "Love Me Do", in late 1962. As their popularity grew into the intense fan frenzy dubbed "Beatlemania", the band acquired the nickname "the Fab Four". By early 1964, the Beatles were international stars and had achieved unprecedented levels of critical and commercial success. They became a leading force in Britain's cultural resurgence, ushering in the British Invasion of the United States pop market. They soon made their film debut with A Hard Day's Night (1964).

John Winston Ono Lennon (born John Winston Lennon; 9 October 1940 – 8 December 1980) was an English musician and activist. He gained global fame as the founder, co-lead vocalist and rhythm guitarist of the Beatles. Lennon's songwriting partnership with Paul McCartney remains the most successful in history.

Born in Liverpool, Lennon became involved in the skiffle craze as a teenager. In 1956, he formed the Quarrymen, which evolved into the Beatles in 1960. He initially was the group's de facto leader, a role he gradually seemed to cede to McCartney, writing and co-writing songs with increasing innovation, including "Strawberry Fields Forever", which he later cited as his finest work with the band. Lennon soon expanded his work into other media by participating in numerous films, including How I Won the War (1967), and authoring In His Own Write (1964) and A Spaniard in the Works (1965), both collections of nonsense writings and line drawings. Starting with "All You Need Is Love", his songs were adopted as anthems by the anti-war movement and the counterculture of the 1960s.

Sir James Paul McCartney (born 18 June 1942) is an English musician. He gained fame with the Beatles, for whom he was the bassist and keyboardist, and shared primary songwriting and lead vocal duties with John Lennon. McCartney is known for his melodic approach to bass-playing, versatile tenor vocal range and musical eclecticism, exploring genres ranging from pre-rock and roll pop to classical, ballads and electronica. His songwriting partnership with Lennon is the most successful in music history.

Born in Liverpool, McCartney taught himself piano, guitar, and songwriting as a teenager, having been influenced by his father, a jazz player, and rock and roll performers such as Little Richard and Buddy Holly. He began his career when he joined Lennon's skiffle group, the Quarrymen, in 1957, which evolved into the Beatles in 1960. Sometimes called "the cute Beatle", McCartney later immersed himself in the London avant-garde scene and played a key role in incorporating experimental aesthetics into the Beatles' studio productions. Starting with the 1967 album Sgt. Pepper's Lonely Hearts Club Band, he gradually became the band's de facto leader, providing creative impetus for most of their music and film projects. Many of his Beatles songs, including "And I Love Her", "Yesterday", "Eleanor Rigby" and "Blackbird", rank among the most covered songs in history. Although primarily a bassist with the Beatles, he has played a number of other instruments, including keyboards, guitars and drums, on various songs with all of his associated bands and projects.