From SCP: Secret Laboratory English Official Wiki
In Game
The following Soundtracks are played in-game.
(If an audio file fails to load correctly and can't be played, refresh the page)
Plays on the main menu after selecting the "Classic" track in the settings.
Plays on the main menu after selecting the "Retro" track in the settings.
Plays when Chaos spawn. Only heard by Class-D and other Chaos.
The main theme of SCP SL. Does not appear in game, but multiple remixes of it do, such as during Light Containment Zone decontamination.
Plays as the default Main Menu Theme
Plays in the elevators that connect Light and Heavy Containment Zones.
Warhead Theme
The theme used for the Alpha Warhead was borrowed from theme "Ajoura - The SCP Foundation Main Theme" made by Ajoura. Only a snippet of the song is used in-game. From 0:47 to 2:20. The theme can be viewed by clicking here.
Miscellaneous
Miscellaneous themes, these include themes of Holiday Events or themes of trailers/teasers.
Removed/Unused
Played when you been alone for over 2 minutes. Replaced by "Massive Labyrinth". Incorrectly listed as "Playing when you are the last person alive on your team" on the Official Northwood Youtube Channel
Played when connecting to a server in the Megapatch II updates only.
