What is the movie Katy Perry part of me about does she sing her songs?

The movie Katy Perry: Part of Me is a documentary film about the life and career of American singer-songwriter Katy Perry. The film follows Perry as she prepares for her California Dreams Tour and gives an intimate look at her personal life, including her relationships with her family, friends, and crew members. The film also features behind-the-scenes footage of Perry's concerts, music videos, and other professional commitments.

Perry does sing her songs in the movie, including performances of some of her most popular hits such as "Firework," "Teenage Dream," and "Part of Me." The movie also features interviews with Perry and other people who have been involved in her career, such as her manager, record label executives, and fellow musicians.

Katy Perry: Part of Me was released in theaters on July 5, 2012, and received generally positive reviews from critics. The film grossed over $20 million worldwide against a budget of $12 million.