Apparently this is just the Black mesa theme backwars and more sadder

me waving for an taxi a bit too hard in germany

thats an amazing soundtrack and it fits the place where it plays on the game :)

mabye its playing back words if it has mesa remix at the end

this song is after the Resonance cascade occours

Roll20 Suspence

Joel Nielsen - BMS - Black Mesa Theme (Mesa Remix)

Entropy : Zero 2 Soundtrack
All rights belong to Breadmen and Spencer Baggett
https://store.steampowered.com/app/1583720/Entropy__Zero_2/

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I did not make this it was made by Joel Nielsen on the black mesa team. All credit goes to them. 
-Black Mesa SoundTrack 17 Interloper

I did not make this it was made by Joel Nielsen on the black mesa team. All credit goes to them. 
-Black Mesa SoundTrack 18 Catalyst

I did not make this it was made by Joel Nielsen on the black mesa team. All credit goes to them. 
-Black Mesa SoundTrack 20 Resonance