More of a music documentary than a concert video, Katy Perry: Part of Me chronicles Perry's year-long California Dreams World Tour in 2011 with an abundance of personal interviews, film of Perry interacting with her fans, and concert footage from California and around the globe. Absolutely bursting with energy, Perry's a fascinating singer, songwriter, and performer who's faced a fair amount of adversity in her career, and whose upbringing was very different than that of most pop stars. This film plays at times almost like a video diary. Perry philosophises about everything from growing up in a strictly Pentecostal Christian family to her fairy-tale outlook on life, costuming choices, how her own experiences and emotions influence her lyrics and music, her drive to remain true to herself, and the difficulty of sustaining a long-distance marriage with actor Russell Brand. There's also plenty of footage with Perry's costumers, makeup artists, various assistants, and friends, including actress Shannon Woodward. But some of the most interesting interviews are those with her sister Angela Hudson, who travels with the show, and her mother and father regarding their commitment to accepting and supporting Perry and her career despite potential conflicts with their religious views. One discussion that's oddly omitted is any hint of why Perry changed her name. While the personal and backstage footage is heartfelt and quite intriguing, the film seemed somewhat lacking in actual concert footage, though viewers are treated to at least parts of "Firework," "California Gurls," "Part of Me," "Last Friday Night," and "Peacock." --Tami Horiuchi