Well, this is a good one ...
Kudos to Kates who caught it on the interwebs this week and shared it with me.
According to a Q&A at Rolling Stone today, the guys -- that would be Jason Bateman, Ed Helms, Will Forte and Jason Sudeikis -- "basically spent a day just messing around and what they came out with just blew us all away," says Mumford & Sons' Ben Lovett.
Awesome. It had me smiling the entire time I watched it.