Answer :
Final answer:
The Beatles' basic instrumental format was a classic four-member rock band configuration, featuring vocals, rhythm and lead guitars, bass guitar, and drums, which became iconic in rock 'n' roll music.
Explanation:
The basic instrumental format for The Beatles comprised of a four-member rock band setup, which included John Lennon on rhythm guitar and vocals, Paul McCartney on bass guitar and vocals, George Harrison on lead guitar and vocals, and Ringo Starr on drums and occasional vocals. This setup allowed The Beatles to create a versatile sound that was capable of both melodic vocal harmonies and complex instrumental arrangements, becoming a defining characteristic of their music.
Their instrumental setup contributed to the revolutionary rock 'n' roll genre that took youth culture by storm, an evolution observable when comparing their work to the rock-n-roll melodies that first gained popularity in the 1950s.
