Taylor Swift’s unusual music film “The Official Release Party of a Showgirl” is the top-grossing draw at the box office this weekend, taking in $33 million to lead all films in North America, according to industry estimates released Sunday.

Not a traditional concert film, the 89-minute release features behind-the-scenes footage and the music video for “The Fate of Ophelia,” a single from the star’s just-released album, “The Life of a Showgirl.” Swift put the film together quickly with little advance marketing and offered it to theaters for three days only, Friday through Sunday.

Last weekend’s top-grossing film, writer/director Paul Thomas Anderson’s “One Battle After Another,” made $11.1 million in its second week, Comscore reported.

“The Smashing Machine,” a biopic of MMA star Mark Ke

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