Presenting …
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What
A humorous remix of Black Mesa’s ‘Surface Tension 2’ track, where HECU marines and other Black Mesa characters narrate the proceedings.
Why
When I was approaching the cliffs for the first time in-game via the tunnel where the jets go by in Surface Tension, nearby marines started randomly speaking in sequence to the music of ‘Surface Tension 2’ for a few moments. After that I knew this had to happen, just more cohesively. 
How
All source material is taken from Black Mesa and its derivative sources (Half Life, Half Life 2). In other words, all material is ‘authentic.’ I adapted existing work, but I didn’t create anything that wasn’t already there. All I did was modulate the voice audio in places and mix it in, and I remastered the track afterward. I didn’t change the music at all outside the remaster.
Legal
I make no ownership claims to any of this material. All source materials are the property of the Black Mesa Development and team and their respective owners.
Permissions
Feel free to use this however you want, non-commercially. Just don’t make any ownership claims that I haven’t made and don’t say you created it (unless you add to it or make a video or something).
Enjoy.