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Black Mesa OST

The Black Mesa OST [1] features 25 tracks composed by Joel Nielsen (http://www.joelnielsen.com/):

• Theme (an old version is on the site)
• Inbound Part 1
• Inbound Part 2
• Inbound Part 3
• Anomalous Materials
• Unforeseen Consequences
• Office Complex (an old version is on the site as Blast Pit)
• We've Got Hostiles (an old version is on the site as Topside)
• Blast Pit Part 1
• Blast Pit Part 2
• Blast Pit Part 3
• Power Up
• On A Rail Part 1
• On A Rail Part 2
• Apprehension
• Residue Processing (an old version is used in the teaser)
• Questionable Ethics Part 1
• Questionable Ethics Part 2
• Surface Tension Part 1 (an old version is on the site as Surface Tension)
• Surface Tension Part 2
• Surface Tension Part 3 (an old version is used in the trailer)
• Surface Tension Part 4
• Forget About Freeman
• Lambda Core
• End Credits (an old version of the second half is on the site)

Black Mesa OST (Early samples)

Some early renditions of the Black Mesa Soundtrack:

• Black Mesa Theme
• Surface Tension Theme
• Surface Tension Theme (long version)
• We've Got Hostiles (also featured in the end of "Black Mesa Line Reading Outtakes" as a background music)
• WGH Topside
• Anomalous Materials
• Blast Pit
• On A Rail
• End Credits (part 2)
• Black Mesa Teaser Trailer (featured in the Teaser)
• Black Mesa Trailer 2 Music (featured in the Official Trailer)
• Demo 3 (featured in the "Early Trailer Test" with the map Crossfire)

Sound effects and ambient sounds

• Joel Nielsen replaced most if not all hit sounds [2]
• The ambient/environment noise folder alone is about a 1 gig. [3]
• Jumping and landing sounds for different materials (Jumping on a solid metal box will sound different than a hollow box rather than playing the footstep sounds). Many of the foot step sounds are being replaced. [4]

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