Prague... Isn't that same orchestra that worked on Hans Zimmer's concert? :D
The headphones' main role is probably to distinguish the different teams on the battlefield.
Developers explain the genesis of the Mario + Rabbids concept.
It's the actual Grant Kirkhope, composer extraordinaire for Goldeneye 007 and Perfect Dark on the N64!! :D
Straight from the developers.
Multiplayer in Mario + Rabbids.
"It's something different that's not really on a Nintendo platform."