Aspiring composer Constance Dane never imagined she would someday meet celebrated New York conductor Franz Roberti. Yet a love of music brings them together, and romantic love soon follows. So, too, do jealousies, human misunderstandings and artistic flareups that will test their devotion. Break of Hearts is a triple-hankie romance to swoon by, swelling with music by Bach, Brahms and other immortals and featuring two box-office legends at their most luminous. Charles Boyer essays the man-of-the-world role of Franz. And Katharine Hepburn, the camera framing and adoring her as only classic Hollywood can, offers a much-acclaimed performance that captures Constance's freshness and fire.