The music.
The only thing it served as was a reminder. A reminder to all aboard this rotting ship of their captian's bleak past, inner anguish, and his now dungeoned wench. Once a man, now a beast. A beast trapped in his own forgotten story. A beast writing a tale of love, betrayal, and vengeance. A beast who's every heartbeat extended his agony further and further. A beast with no heart, nothing to fill the void space in his chest. Nothing to fill his blackened, twisted soul. Nothing…..but the music.
Nothing at all.
That was exactly what the keys did. Providing his anger an outlet, his tears a shoulder, his love a….a…..nothing. She had ripped out his heart, and forced him to do it himself! No. Stay focused on the keys.
The keys. The lullaby she carried with her long gone, unthinkable over the organ's raging roar. The one thing that kept them united, throughout the endless waves, could not be heard by way of the vengeful song. It echoed along the ship and into the dank night behind.
His fleshy beard pressing down keys slower and slower with each passing moment, his impossibly broad shoulders sinking at last, Davy Jones lapsed into slumber at last.