"DISSIDIA" is the leitmotif of Dissidia Final Fantasy, its prequel Dissidia 012 Final Fantasy, and the upcoming arcade version reboot. It was composed by Takeharu Ishimoto, and its introduction was first heard as the theme for the Dissidia Final Fantasy teaser trailer in 2007, the full theme only being present in the Jump Fiesta. The Dissidia games present several variations of the theme. A vocalized version of the theme called "Massive Explosion" is used for the reboot version of the first game.