Actually for me it is an hommage to all the ancient composers. If you listen carefully, the first part is really Nobuo Uematsu with Don't Be Afraid from Final Fantasy VIII. With the rythm of the strings and the triangle which is really not common. Then, the second part looks like "Esper Battle" From Final Fantasy XII (Hitoshi Sakimoto) with the tubular bells, the powerfulls horns and the way that the percussions are playing. Then, the third part is really close to the musics of Yoko Shimomura from Final Fantasy XV, KH, ETC. with the violin playing with long notes and in the back you Can listen to the epic horns which give the rythm and the quick percussions. It is really Shimomura. Then the last part, its an hommage to Masashi Hamauzu, from final fantasy XIII. One single string with a glamour melody, and of course the piano in the back that Hamauzu loves so much. Then the single string ends with a higher note. It really looks like final fantasy XIII.