TRAVERSE CITY, Mich. (AP) — Tickets go on sale Saturday for Madonna's appearance at the Traverse City Film Festival.

But don't bother trying to order them by phone or online. They'll be available only at the State Theatre in downtown Traverse City, where the pop star will show her new film, "I Am Because We Are," on Aug. 2.

Festival founder Michael Moore has said Madonna will personally introduce the documentary, which describes the plight of impoverished people in the African nation of Malawi.

Madonna and Moore are friends and Michigan natives.

The theater seats about 540 people. Tickets cost $25 each. Moore said Wednesday that all the money from the ticket sales will go to Madonna's Raising Malawi Foundation.