Current order of tracks:

Startup 1 [not added yet] 
Original audio: unknown 

Startup 2 [not added yet] 
Original audio: unknown 

Core overheating/critical 
Original audio: unknown 

Core overheating/critical 2 [unused] 
Original audio: Black Mesa - Inbound p1

Core meltdown (shutdown available)
Original audio: Mattia Turzo & The Little Orchestra - Ultra

Core meltdown [phase 2] 
Original audio: Expiate the Sin

Core meltdown v2 idk [not added yet] 
Original audio: unknown 

Core meltdown phase 2 v2 idk [not added yet] 
Original audio: unknown 

Core shutdown success 
Original audio: part of Portal Reloaded trailer music

Core stall (“freezedown”) 
Original audio: unknown

A Core Game OST

Joel Nielsen - BMS - Inbound Part 1

This isn’t mine, I just wanted to get it on SoundCloud

Created by the people who made portal stories Mel

A Core Game OST - Reaction Stall [Freezedown]

This isn’t mine, I just wanted to get it on SoundCloud

Created by unknown

A Core Game OST - Meltdown Inbound

This track was made by Harry101UK, I am just uploading it to Soundcloud from YouTube. 

Portal 2 - Portal Stories- Mel - Interfacing

A boss theme I originally made for the end scene in Portal Stories: Mel, but it was changed later in development.

This is my original vision of the track, and my personal favourite. Now remastered a bit! ;)

Portal Stories: Mel Soundtrack

Portal Stories: Mel - System Corruption [remaster]

This was NOT made by me, this was made by Harry Callaghan www.youtube.com/user/Harry101UK 
@harry101uk

Waking Up To Science

Track made by Michael Huang, I do not own this.

BFDI OST - Lickie

a bit of the portal 2 OST: I AM NOT A MORON!

Audiomachine - Godspeed

This is Stanley Parable, from the music in the background during the mind control.

A Core Game OST

ThatFurryonMainStreet