After what always seems like a 20 year hiatus, Weird Al Yankovic is back with a "new" song. Broken online and already going viral, Al has borrowed the Summer's big current hit "Happy" by Pharrell Williams.

The video was debuted on "The Nerdist" website "WEIRD AL YANKOVIC GETS ‘TACKY’ WITH PHARRELL’S ‘HAPPY’"

"Featuring guest appearances from comedians Aisha Tyler, Margaret Cho, Eric Stonestreet, Kristen Schaal and Jack Black, the video was shot on location at the historic Palace Theatre in Downtown Los Angeles, the same space that was used as Julianne Moore’s apartment in The Big Lebowski.

“We’re going to have some fun today!” Al told us before shooting began. “Thank you, Pharrell; I really appreciate it–you’re a cool guy,” he said as he cracked that famously wide smile."

Al's new "album", "Mandatory Fun" drops on Tuesday. Here's his new instant classic "Tacky" We will be playing it on WFGR in about...30 years. :)