Who do you consider the greatest video game composer?

[Gprofessor]

Grant Kirkhope.

His work on Banjo Kazooie alone would be enough to make him one of the best composers in the videogame scene, but he also did the phenomenal GoldenEye and Perfect Dark soundtracks, as well as Banjo Tooie and DK 64.

I don't know if Hiroyuki Sawano is considered a video game composer, since he has only worked on Xenoblade Chronicles X, as far as I know. If he is eligible he is also a strong contestant for the spot, for his work on that game alone.