Last episode of the web series had arrange credits for Ryo Mizutsuki and Syoji Morifuji:
http://i.imgur.com/4NZjWRV.jpg
Not sure if the movie music is the same or if this contains the web series music as well.
There was also a pretty nice version of the original Human Warrior by Shinji Orito.
EDIT: Aniplex+ confirmed it contains both
https://www.aniplexplus.com/itemsdbamfOq