Nicholas Ma creates a short, loving portrait of his legendary father, Yo-Yo Ma. Avoiding idolatry, the film uses its casual intimacy to focus on the nuances of craft and the drive for perfection, detailing the world-renowned cellist’s endeavor, at age 61, to record Bach’s Cello Suites for the third and, he says, last time. Filmed in the splendid Mechanics Hall in Worcester, Massachusetts.