The keyboards used by the Katayanagi Twins are two musical keyboards that lock together to form one. It is used as the The Katayanagi Twins' weapon in the film. They use it to summon and control their Snow Dragons after amping the volume to 11 (5+6). It can also create a visible sound wave that tears the roof off of the building. The Keyboards are destroyed along with the Twins themselves when Sex Bob-omb's Yeti throws both Dragons down on top of them.