Maybe it is because of its militaristic orchestral grandeur? Interestingly enough, the VIII arrangement is the de facto version played during a lot of Final Fantasy concerts and you can hear the snippets of its tune in subsequent versions of the theme.Especially the way it was used as the Theme Music Power-Up for the Combined Energy Attack in Final Fantasy IV, and its reprise in the endings to Final Fantasy VI, VII, VIII, and XV. The Final Fantasy Main Theme, also referred to as the Prologue.