"A World Without Love," by far Peter & Gordon's biggest hit, was the first British Invasion single to top the charts other than releases by the Beatles in 1964. The secret to its success was no big mystery, even at the time, for "A World Without Love" was written by John Lennon and Paul McCartney, the same songwriting team responsible for all the early Beatles classics. Actually, the song was written by McCartney (Lennon and McCartney sometimes worked entirely separately even in the early Beatles days), making its way to Peter & Gordon as Peter Asher was the brother of McCartney's girlfriend of the time, Jane Asher. (The Beatles never did record "A World Without Love.") Lucky Beatles connections aside, the record was a big hit primarily because it was a very good song. It was perhaps a little sappier than what the Beatles wanted to sing on their own records, but it boasted another great haunting Paul McCartney melody and fine Everly Brothers-meet-British Invasion harmonies by Peter Asher and Gordon Waller. There were also some fine responsive folky guitar licks inserted throughout the track and a combo organ-guitar solo where most British Invasion acts would have stuck with just a guitar. Like many a Beatles song, the cheerier verses gave way to somewhat moodier, more morose bridges before skillfully steering right back to the main melody of the song at the exact point it returned to the verse. And, like many an early Beatles song, the despondency of the lyrics was almost belied by the immediately memorable melody and happy character of the vocals. At the very end of the song, for the last repetitions of the title, an additional pleasing chord is tagged on that doesn't appear elsewhere, another characteristically ingenious Lennon-McCartney device. Almost folk-rockish in its tone and arrangement, "A World Without Love" was later scorned by John Lennon for its opening line about asking to be locked away in particular. But there's no doubt that it's a quality, memorable early British Invasion classic, probably the best Lennon-McCartney song never recorded by the Beatles.