This is a spin off from a late show segment. This guy James Corden I believe. He hosts a late night show called the late late show. Don't know which channel it comes on but there's a segment callsc drop the mic and that's where this comes from. Now I've never seen his show unless I see random clips of these battles or while searching for interested interviews he might pop up on YouTube, so I can't comment much on his show or these battles. They are pretty entertaining tho.