On October 5, 1962, a 45rpm single was released called "Love Me Do," with "P.S. I Love You" on the B-side. It was the very first Beatles single, and it peaked at #17 on the British pop charts. The song went to #1 in the U.S. two years later. The song, written by teenagers John Lennon and Paul McCartney years earlier, was pretty nondescript compared to their later music, but it marked the beginning of a decade-long phenomenon in pop music. The Beatles reached unprecedented popularity in the music industry and are to this day the best-selling band in history.