I´ve made this track when we were testing some game music in the Game Rangerfall (dont be lasy you can found more information in steam greenlight)
This is a basic music system you maybe heard before in skyrim, farcry and openworld games. It changes from calm gameplay to action and then calm again.
This is really cool for FPS and 3rd person games.
Please contact me if you would like to use this in a project. We can discuss the details.