Fred Hersch, Let Yourself Go (Aha!). This skillful documentary delves into what makes Hersch one of the most distinctive pianists of his generation. It includes generous sequences of his playing and his articulate reflections on music. Among other admirers, his teacher, Sophia Rosoff, discusses the “basic emotional rhythm” that sets Hersch apart. The film also explores Hersch’s significance as one of the first major jazz artists to go public about his homosexuality and his infection with the HIV virus. For a six-minute trailer, go here.