2. Paul McCartney - 'Maybe I'm Amazed'
It took a long time for Paul McCartney's "Maybe I'm Amazed" to become a big hit single. He wrote the song about his wife Linda in 1969, before the Beatles even broke up. It first surfaced on his 1970 solo debut McCartney, but he didn't release it as a single. Only seven years later, when he released a live version on Wings Over America, did it finally land on the charts. That live version is the one you hear most often on the radio, and McCartney almost never finishes a concert without breaking out this song.