The Beatles play to nearly 60,000 fans at Shea Stadium in New York City, an event later regarded as the birth of stadium rock.

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 Western 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.

The Beatles staged their second concert tour of the United States in the late summer of 1965. At the peak of American Beatlemania, they played a mixture of outdoor stadiums and indoor arenas, with historic concerts at Shea Stadium in New York and the Hollywood Bowl. Typically of the era, the tour was a "package" presentation, with several artists on the bill. The Beatles played for just 30 minutes at each show, following sets by support acts such as Brenda Holloway and the King Curtis Band, Cannibal & the Headhunters, and Sounds Incorporated.

Arena rock is a style of rock music that became mainstream in the 1970s. It typically involves radio-friendly rock music that was designed to be played for large audiences.