Not made by me.
It is the song used for the trailer for Portal Stories mel.
Awesome game. Really good song too.
This is the trailer one.
There is another one with the same name but is used for a level in the game. (different sounds)

Troubled Water [Trailer Theme] Portal Stories Mel

Troubled Water [Level theme] Portal Stories: Mel

Deliver Hope Extended [Halo Reach]

R.c. Grozy

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