There are 4! (Or maybe it was 5. One or the other.) Not that that helps, probably. :)

That would have been fun! I suspect the reason it didn't happen that way is due to the need to work together to come up with their riffs—they had enough to handle with the EVERYONE RIFFS shorts, and it was likely more manageable otherwise for the teams to work with the people they normally work with (Joel & Jonah…