Relaxed. Ambient. Orchestral. Drumline (marching band). Jungle overtones. Exploring. Video game-like. Deus Ex 1 reminiscent.
When I imagine what this tune could be used for, I think of a video game where a civilian (the player) is exploring a small semi-military colony on Mars. Kinda like Doom 3. But it also reminds me of Deus Ex 1's UNATCO theme somewhat. It's just weird.
While I was making this, I just thought it'd be cool to add some drumline on top of some ambience to give it shape. That's it.