From Impose Magazine's inteview with Zach Galifianakis:

Are you into much hip hop these days?
Zach: Not really, even though strangely I’m shooting Kanye West’s new music video here at the farm. He asked me to do it. He doesn’t want to be in it, but he sent me this new song and then asked me to make a video for him here at my farm. He saw me do stand up a few weeks ago here in Los Angeles, and we chatted after the show. He had seen me do these other music videos; I did one for Fiona Apple and I did one of my own where I sing an Anita Baker song. So he saw the Anita Baker one and asked me if I would come up with something. So we’ve been going back and forth trying to figure out what I’m going to do with the song. So I’m figuring that out here at my farm.

Do you know if this is going to be the first single off his new album?
Zach: No I don’t think so. I don’t know what the single is? I have no idea. I think he just wants to release it. No one really does music videos anymore, so he just turned it over to me and gave me a few bucks. I guess I’ll probably shoot it at the end of the day.

Watch Zack and Will Oldham's horseplay at kanyewest.com.