"Following last week’s dragon transformation video, Famitsu has gone up with a new Shining Resonance video showcasing the game’s B.A.N.D. system.
During battle, you can fill up your Battle Mana Performance (BMP) gauge by attacking enemies. When at least one of you three bars is filled, you can press R1 to activate the B.A.N.D. system. When B.A.N.D. is activated, your BMP gauge decreases gradually and certain effects will be bestowed upon the party based on who is placed at the center of the B.A.N.D."