Ha, you can even hear it in this
poor quality trailer. Definitely Nakano.
He's a frustrating composer to me. I think his style is unique and could produce great results, but I don't think he tries enough on melodies or development beyond small variations on the thing he's been repeating throughout the entire track up to that point. "Enemy Attack" from FFX is a good example of one that I could say is totally solid if he had just made 30 seconds more that was somewhat different than the rest. DewPrism is easily his best work to my ears and his only consistently good soundtrack. Wonder if these FullMetal Alchemist games gave him a chance to grow, since there's some more melodic stuff in that trailer alone and other videos show more music less typical of him. Is he the sole composer?