Jack Black reveals story behind his epic rendition of Britney Spears’ hit song in Kung Fu Panda 4

Jack Black walked the red carpet in Sydney and told news.com.au about why he chose to cover Britney Spears’ hit in his new movie.

Jack Black brought the funny to Sydney this past weekend while promoting his upcoming new movie, Kung Fu Panda 4.

All eyes were on the Hollywood star when he walked the red carpet at Event Cinemas in Bondi Junction on Saturday to the reception of hundreds of fans – young and old – of the hit film franchise.

Black – who also fronts the rock band Tenacious D – is thrilled to be back for the fourth instalment of the movie as this time he got to put both his acting and musical talents to use.

With some creative control, the 54-year-old got to sing the end credits for the film and he chose to do a cover of Britney Spears’s 1998 smash hit Baby One More Time.

Jack Black at the Sydney premiere of Kung Fu Panda 4.

The star spoke to news.com.au on the red carpet.

Speaking to news.com.au at the premiere, Black revealed the story behind the epic Spears cover, which he teased on his social media ahead of his trip Down Under.

“The director (Mike Mitchell) wanted a Tenacious D jam in the end credits and my manager said you should do the Britney Spears cover,” he said on the red carpet.

“And I loved that idea because the song that we used is the most kick-ass melody and jam – it really slaps. And when you add the Tenacious D rock, it’s a great combo.”

Black returns as the world’s most unlikely Kung fu master, Po the panda, who embarks on a quest to defeat some world-class villains.

Black covers Britney Spears’ hit song Baby One More Time in Kung Fu Panda 4.

The film also star Dustin Hoffman as Kung Fu master Shifu, Bryan Cranston as Po’s birth father Li, and the very funny new kid on the block Awkwafina, who voices a sly fox named Zhen.

The film is in cinemas on March 8 but in July Black returns to our shores to tour with Tenacious D – the self-professed best rock band on earth.

Black and bandmate Kyle Gass will take their Spicy Meatball Tour around Sydney, Newcastle, Melbourne, Brisbane and Adelaide in what will be their first live dates in Australia since 2013.

The actor and Gass were theatre students when they first formed Tenacious D back in the ’90s when growing up in LA.

By 2014, they won their first Grammy for Best Metal Performance for The Last In Line.