Jack Black has confirmed the viral rendition of Britney Spears’ Baby One More Time will play during the end credits to Kung Fu Panda 4. The film stars Black as panda protagonist Po, who is set to become the spiritual leader of the Valley of Peace but finds himself in need of a successor for the role of the Dragon Warrior. It comes days after the star, who forms one half of US rock comedy duo Tenacious D with Kyle Gass, went viral after posting a video of the pair dancing to