This is a moving documentary exploring the incredible transformative power of Chopin's Ballade Number 1, the piece of music that has cast a spell on millions of people around the world. Less than ten minutes long and extremely difficult to play, it demands extraordinary feats of control, speed, memory, power and dexterity. In this emotional documentary, two people from opposite sides of the world talk of its effect on their lives. Japanese teenager Momoka, still coming to terms with the earthquake that decimated her community, finds it the perfect outlet for releasing the anguish she hides inside. For Scottish music student Paul, recovering from his fifth brain surgery, the Ballade was literally life-changing - he credits its emotional pull for the return of his memory. Also commenting are four of the greatest pianists alive today: Vladimir Ashkenazy, Lang Lang, Imogen Cooper and Stephen Hough.