Paul McCartney

Net worth: $1.3 billion. The Beatle who wrote "Yesterday" (the most covered song in history, with 3,000+ versions) has been accumulating wealth for six decades. His song catalog, touring income (he still sells out stadiums at 83), and MPL Communications (which owns publishing rights to Buddy Holly, Carl Perkins, and thousands of other songs) make him the richest musician in the UK. McCartney earned an estimated $800 million from touring alone since 2000. He's also the last Beatle actively touring — a reminder that some investments compound for half a century.