<The video you have linked to is one of two orbit tracks produced for Warmind (the worst DLC but that's not the point right now). The official soundtrack released for Warmind did not include them, and only included the title music (God on Mars) as well as most of the music on the planet. Honestly Warmind's soundtrack is the most complete as even The Taken King and Rise of Iron missed out on a few tracks. There is a whole slew of unreleased tracks, some of which outclass their released versions or the included tracks entirely. Protheon's theme from the Inverted Spire? One of the best tracks in the game and it's not on any official release. The ORIGINAL Whisper music that it was based on that was used in the Taken mission in the campaign? Once more, an amazing track not included (don't even get me started on its Reckoning counterpart).>