George Harrison in the context of "The Quarrymen"

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).

The English rock band the Beatles, comprising John Lennon, Paul McCartney, George Harrison and Ringo Starr, are commonly regarded as the foremost and most influential band in popular music history. They sparked the "Beatlemania" phenomenon in 1963, gained international superstardom in 1964, and remained active until their break-up in 1970. Over the latter half of the decade, they were often viewed as orchestrators of society's developments. Their recognition concerns their effect on the era's youth and counterculture, British identity, popular music's evolution into an art form, and their unprecedented following.

Many cultural movements of the 1960s were assisted or inspired by the Beatles. In Britain, their rise to prominence signalled the youth-driven changes in postwar society, with respect to social mobility, teenagers' commercial influence, and informality. They spearheaded the shift from American artists' global dominance of rock and roll to British acts (known in the US as the British Invasion) and inspired young people to pursue music careers. From 1964 to 1970, the Beatles had the top-selling US single one out of every six weeks and the top-selling US album one out of every three weeks. In 1965, they were awarded MBEs, the first time such an honour was bestowed on a British pop act. A year later, Lennon controversially remarked that the band were "more popular than Jesus now".

Autobiography of a Yogi by Paramahansa Yogananda is a spiritual classic published in 1946. It recounts Yogananda's life, his search for his guru, and his teachings on Kriya Yoga. The book has introduced many to meditation and yoga and has been influential in both Eastern and Western spiritual circles. It has been translated into over fifty languages and continues to be widely read. Notable admirers have included Steve Jobs, George Harrison, and Elvis Presley.

Paramahansa Yogananda was born as Mukunda Lal Ghosh in Gorakhpur, India, into a Bengali Hindu family. Autobiography of a Yogi recounts his life and his encounters with spiritual figures of the Eastern and the Western world. The book begins with his childhood and family life, then finding his guru, becoming a monk and establishing his teachings of Kriya Yoga meditation. The book continues in 1920 when Yogananda accepted an invitation to speak at a religious congress in Boston, Massachusetts, USA. He then travelled across the USA, lecturing and establishing his teachings in Los Angeles, California. In 1935, he returned to India for a yearlong visit. When he returned to the USA, he continued to establish his teachings, including writing this book.

The Band was a Canadian-American rock band formed in Toronto, Ontario. It consisted of Canadians Rick Danko (bass, guitar, vocals, fiddle), Garth Hudson (organ, keyboards, accordion, saxophone), Richard Manuel (piano, drums, vocals) and Robbie Robertson (guitar, piano, percussion) and American Levon Helm (drums, vocals, mandolin, guitar, bass). The Band's music combined elements of Americana, folk, rock, R&B, jazz and country, which influenced artists including George Harrison, Elton John, the Grateful Dead, Eric Clapton, Wilco, and King Gizzard & the Lizard Wizard.

Between 1958 and 1963, the group were known as the Hawks and were the backing band for rockabilly singer Ronnie Hawkins, based in Toronto, Ontario. In the mid-1960s, they gained recognition for backing Bob Dylan on his 1966 concert tour as Dylan's first electric band. After leaving Dylan and changing their name to "The Band", they released their 1968 debut album, Music from Big Pink, and its succeeding album, 1969's The Band, to critical acclaim and commercial success. Pink Floyd's Roger Waters deemed it the "second-most influential record in the history of rock and roll", and music journalist Al Aronowitz called it "country soul ... a sound never heard before". The Band's most popular songs include "The Weight" (1968), "The Night They Drove Old Dixie Down" (1969), and "Up on Cripple Creek" (1969). The Band later released Stage Fright (1970), Cahoots (1971), the live album Rock of Ages (1972), the covers album Moondog Matinee (1973), and Northern Lights – Southern Cross (1975).

The studio practices of the Beatles evolved during the 1960s and, in some cases, influenced the way popular music was recorded. Some of the effects they employed were sampling, artificial double tracking (ADT) and the elaborate use of multitrack recording machines. They also used classical instruments on their recordings and guitar feedback. The group's attitude towards the recording process was summed up by Paul McCartney: "We would say, 'Try it. Just try it for us. If it sounds crappy, OK, we'll lose it. But it might just sound good.' We were always pushing ahead: Louder, further, longer, more, different."

A Hard Day's Night is a 1964 musical comedy film starring the English rock band the Beatles – John Lennon, Paul McCartney, George Harrison and Ringo Starr – that was released during the height of Beatlemania. Directed by Richard Lester, it was written by Alun Owen and originally released by United Artists. The musical soundtrack makes up the band's album of the same name. The film portrays 36 hours in the lives of the group as they prepare for a television performance.

The film was a commercial and critical success and was nominated for two Academy Awards, including Best Original Screenplay. Forty years after its release, Time magazine rated it as one of the 100 all-time greatest films. British critic Leslie Halliwell described it as a "comic fantasia with music; an enormous commercial success with the director trying every cinematic gag in the book" and awarded it a full four stars. The film is credited as being one of the most influential of all musical films, inspiring the Monkees' television show and pop music videos, and various other low-budget musical film vehicles starring British pop groups, such as the Gerry and the Pacemakers film Ferry Cross the Mersey (1965).