A band is a group of entities that unite with a common quality or idea. They are the five members/fingers that when united, make a fist. Their combined energy greater than their individual sum. When you hear a band, you are hearing them dialogue and riff on their commonalities. The energy they create by means of fusing their spirits is unleashed onto the crowd. That energy sparks the audiences engines, causing a reaction that can be felt clearly in the belly of the beast(crowd center). Their energy fires back to the band and thus the binding occurs in that moment.
But, then sometimes it the opposite.
