The idea of a "musical shower" inspires a lot of different images in one's mind, but this one doesn't use water. Instead, Burger King is making it so customers can listen to their own music while they eat, without disturbing anyone else. At least, that's the plan.
The system uses your own iPod or iPhone, and at its core, it's a fancy dock. You play your music just as you would at home. What's different? You've got the "shower" component hanging above, which should keep your tunes contained to your booth.
It's a cool idea and one that looks fun to play around with, but let's hope it works like it should or else you're going to have a lot of clashing music and a restaurant full of annoyed customers.
Burger King is rolling the musical showers out at locations in Tokyo (a location which Burger King has already called it quits once). If it's popular there, maybe we'll see something like this find its way to America.