When discussing the discography of Sir Paul McCartney, one enters a labyrinth of genre-defining rock, lush ballads, electronic experiments, and ambient classical compositions. For a career that spans over six decades, the concept of a "Greatest Hits" package is simultaneously a necessity and an impossibility. How does one compress the genius behind The Beatles, Wings, and a monumental solo career into a single compact disc?

A true physical release would also include deep cuts for the fans: "Nineteen Hundred and Eighty Five" (the hidden epic of Band on the Run ), "Mull of Kintyre" (the UK's biggest selling single until "Do They Know It’s Christmas?"), and "Take It Away" (a tribute to the joy of listening to music).

Much of the set is dedicated to Wings, the band McCartney formed with his wife, Linda. It includes the soaring production of "Band on the Run," the James Bond classic "Live and Let Die," and the melodic power of "Jet" .