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Jack Black has challenged his The House with A Clock In Its Walls co-star Cate Blanchett to a “battle of the jams,” posting the results to Instagram yesterday (November 9).

And that’s not all: he tagged Thor star Chris Hemsworth and director Taiki Waititi to his challenge as well, calling both of them out for “poach[ing] our style.”

So what is he on about? Is this a celebrity feud a la Taylor Swift and Katy Perry? And should we be worried?

Well, yes and no. Jack’s beef stems from the use of the Led Zeppelin classic “Immigrant Song” in Thor: Ragnarok, which is currently doing big business in the U.S. and international box office. The rock song features heavily in the film, from its trailer to the final battle sequence.

It’s a track that’s famously hard to use, as the members of Led Zeppelin are highly selective about allowing their songs to be used in film and TV. Taiki Waititi admitted recently it took the entire production of the Marvel movie to get their permission.

Until recently though, if any film was associated with the track, then it was School of Rock, the 2003 comedy that saw Jack play a failed rocker and substitute teacher who forms a band of fourth graders in an attempt to win an upcoming “Battle of the Bands.”

“Immigrant Song” was so crucial to the film, Jack made an on-set video begging Robert PlantJimmy Page and John Paul Jones of Led Zep for their permission to use it.

Clearly Jack put a lot of work into getting that song, so it’s understandable he’s a bit put out theater-goers have now got another movie in mind when they hear that song.

And while Chris Hemsworth and Taiki Waititi are yet to respond to Jack’s “School of Ragnarok” challenge, it just so happens that he’s currently filming with a certain Cate Blanchett, aka Hela the Goddess of Death in Thor: Ragnarok.

Jack plays Jonathan Barnavelt in the upcoming film adaptation of the beloved children’s book The House with a Clock in Its Walls, while Cate plays his neighbor and witch Mrs. Zimmerman.

Watch as they rock out Thor: Ragnarok style with director Eli Roth and co-star Owen Vaccaro (who plays 10-year-old Lewis Barnavelt) during a break in filming:

A post shared by Jack Black (@jackblack) on

The House with a Clock in Its Walls opens in theaters on September 21, 2018.

Who do you think won the School of Ragnarok challenge?

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Filed Under: Cate Blanchett, Jack Black
By Kat Sommers
Kat is a freelance writer for Anglophenia.