The documentary Amy, about the life and death of singer Amy Winehouse [1], hits theaters starting on July 3. Today, we're getting a sneak preview of the film that shows just what a remarkable talent the late star really was. The movie opens on newly uncovered footage of a 14-year-old Amy serenading a childhood friend with "Happy Birthday" — already with her signature, soulful voice in full force. For more on the story behind this home video and the documentary itself, read our interview with Amy director Asif Kapadia [2].