The holiday special, based on books by Doreen Cronin and Betsy Lewin, is written by Will McRobb and directed by Jennifer Oxley. Patton Oswalt, Rachel Bloom, and Pete Davidson are voicing characters.

"When I was preparing to write the theme for Click, Clack, Moo I listened intently and repeatedly to my favorite kids’ songs by writers like Joe Raposo and Harry Nilsson," explains Okkervil River's Will Sheff. "There’s something about writing songs tailormade for kids, I noticed, that brings out something really tender and urgent in adults. You start thinking a lot about what the one simple and sincere message you’d like to pass on to a kid might be.

"In the case of Click, Clack, Moo," Sheff continues, "I had to work with already existing material, so my job was more to mine what was already there than it was to make up something extraneous. The original Click Clack Moo book, by Doreen Cronin, is about a bunch of farm animals who learn that by banding together they can get the farmer to provide them with better living conditions. So I thought I’d write a song that reflected that message - that if you stand together with your friends and if you stand up for your friends you’ll never feel alone and you’ll be able to get great things on behalf of everybody, stuff that would never be possible to do all yourself."

Check out Click, Clack, Moo: Christmas At The Farm on Amazon.