“When I’m Sixty-Four” is Paul McCartney’s nostalgic throwback to British music hall, and a tribute to his father, Jim McCartney. Today, we examine George Martin’s iconic clarinet score for the song, and consider how much Paul had a hand in writing that score. We’ll also go into the recording studio to recreate the clarinet score with three musicians, led by John Reeks, Professor of Music at Loyola University, and we’ll break the score down to see what we can learn about its construction and composition.