If you're going to tackle a Britney Spears song, you better come prepared and you better do it right. That's exactly what ...

in which Tenacious D (a.k.a., Black and long-time collaborator Kyle Gass) bust out an extremely bearded cover of Britney Spears’ “…Baby One More Time” for the soundtrack of Kung Fu Panda 4.

Baby One More Time.” Speaking at the Kung Fu Panda 4 premiere in Los Angeles on Sunday, Black, 54, — who plays the role of Po in the upcoming movie — revealed the origins of the cover ...