Where is the music of Ganymede coming from?

Jupiter's moon Ganymede is the largest moon in the solar system, larger even than Mercury and Pluto, covered in a crust of water ice over a hundred miles thick, covering oceans of liquid water hundreds of miles deep.

And there's something intelligent there, something powerful enough to manipulate gravity itself.

Gen33 is an expendable clone sent to investigate this "music" of Ganymede, but Gen is not prepared for what awaits.