Taylor Swift scared ‘Exorcist’ sequel producer into moving horror film release date

Taylor Swift course offered at Arizona State

A course that mixes Taylor Swift and psychology will be taught in the fall at Arizona State University. The course instructor joined LiveNOW from FOX's Josh Breslow to discuss why the class is not meant to be a fan club for the pop star.

Horror producer Jason Blum may be ready to take on demons, but he feels he is no match for Taylor Swift.

The film veteran and founder of Blumhouse, who has produced hits like "Insidious" and "The Purge," said he made the decision to move the release of his latest film "Exorcist: Believer" up from Friday, Oct. 13 – a coveted date for a scary movie – after the "Cruel Summer" singer announced in August that the concert film of her "Eras" tour would open that day.

"We had this amazing Friday the 13th in October, which is the single best day to release a scary movie," he told Entertainment Tonight. "Obviously, we moved off that and we bowed our head to Taylor Swift," Blum said of the new "Exorcist: Believer" Oct. 6 release date. "It was too risky to see if 'Exorswift' was going to take or not. People will still have the ‘Exorswift’ opportunity, so maybe we got to have our cake and eat it too."

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"The Exorcist: Believer" changed its release date when Taylor Swift announced her concert film would come out on Oct. 13. (Amy Sussman/Gabe Ginsberg/WireImage / Getty Images)

When the "Style" singer made the surprise announcement in August that "Taylor Swift: The Eras Tour" would premiere in theaters on Oct. 13, Blum immediately suggested a "Barbieheimer" – seeing both "Barbie" and "Oppenheimer" – type of theatergoing experience with "Exorswift" on his social media, but he quickly decided he didn’t want to compete against the musical icon in his opening weekend.

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"Look what you made me do," he joked on Twitter at the time, adding the hashtag #TaylorWins."

"The one thing that scares me to death is Taylor Swift!" he jokingly told ET.

Swift’s "Eras" tour has become a cultural phenomenon that not only sold out shows over the last year, but crashed Ticketmaster last year because of excessive demand for tickets.

Taylor Swift's "Eras" concert tour film premieres in theaters on Oct. 13. (Hector Vivas/TAS23/Getty Images for TAS Rights Management / Getty Images)

"The Exorcist: Believer," which hits theaters 50 years after the original shocked moviegoing audiences in 1973, follows two young girls who start exhibiting strange behavior similar to Regan MacNeil, played by Linda Blair, during her demonic possession.