Beatles did a lot of rock 'n' roll in the early days, including Chuck Berry covers and originals such as "I Saw Her Standing There" and "I Wanna Be Your Man," which the Rolling Stones made into a hit single. Listen to Paul's melodic yet propulsive bass line for "I Saw Her Standing There," recorded in 1963, and you'll see that he set the course for rock bass as well. Before McCartney, most rock bass either imitated simple standup bass or meandered around the fretboard without a clue. McCartney gave it direction, rhythm, and tunefulness. I had to set Kizanski straight on this as well (not that he acknowledged that I was right, of course) but I went further back to the Hamburg Star Club recordings. If that ain't rock, nothing is. And then, of course, there's "Hey Bulldog," "Helter Skelter," "I Want You (She's So Heavy)," etc.