The Fidelio Incident original soundtrack by Michael Krikorian composes over 40 minutes of original music. He incorporates themes from Fidelio's overture and transforms them to fit the mood and atmosphere of the game. The score expands the emotional depth of the narrative while complementing the atmosphere of the island. You'll find the files in you Steam directory upon purchase:
...Steam\steamapps\common\The Fidelio Incident\Soundtrack

Track Listings:
01 - Fidelio
02 - Black Smoke
03 - Frozen Walls
04 - The Search
05 - Crossing The Tundra
06 - Cold War
07 - Interrogation
08 - The Escape
09 - Madness
10 - Burning Alive
11 - Confession
12 - Leonore