John Lennon and Paul McCartney
Band: The Beatles
The rift between John Lennon and Paul McCartney, which brought about the end of rock's most storied group, is pretty much legendary. There was Yoko, there was business, there were creative differences, and so on. What you might not know is that Lennon wrote a diss rap about Paul called "How Do You Sleep?", which included the line "the sound you make is muzak to my ears." That's cold.