Speaking of Lennon and McCartney, George martin says the "it was the Competition that made them write so well"
Lennon–McCartney was a songwriting collaboration between English musicians John Lennon (1940–1980) and Paul McCartney (born 1942) of the Beatles. It is the best-known and most successful musical collaboration of all time by record sales, with the Beatles selling over 600 million records worldwide in 2004.
Sir Paul McCartney recounts this troubled time in his relationship with John Lennon, his friend and musical soulmate. "When we broke up and everyone was now throwing around, John was disgusted,
Hence, the correct answer is Competition.
Learn more about Lennon and McCartney on https://brainly.com/question/25815250
#SPJ4
