response: Yes, the primary songwriters Lennon and McCartney were highly influential on the evolution of pop music
history: I was raised on the Beatles as a kid.  My parents played them all the time That's nice, did you know they started in Liverpool back in 1960? Yes and Beetlemania hit the states in 1963.  They were everywhere
knowledge: In 1963 their enormous popularity first emerged as ''Beatlemania''; as the group's music grew in sophistication, led by primary songwriters Lennon and McCartney, the band were integral to pop music's evolution into an art form and to the development of the counterculture of the 1960s.