Jack Black Reveals the Hardest Part of His Viral Britney Spears Cover: 'I Did It Probably Like 100 Times'

If you're going to tackle a Britney Spears song, you better come prepared and you better do it right. That's exactly what Jack Black and Tenacious D did when they took on " . . . Baby One More Time" - but according to Black, there was one element of the song that took him about 100 tries to get right. Black and his band went viral for covering the song for the "Kung Fu Panda 4" soundtrack last year, even highjacking the premiere's red carpet to film a surprise music video for the cover. In case you somehow missed it, let's get you up to speed. Appearing on Tuesday's episode of . . .