As I said on my user page, I appreciate all help from more experienced Hammer mappers. If you'd like to help me in some way, this is the place you are looking for. Skloomax (talk) 17:31, 14 July 2017 (UTC)
Soundtrack
Everything about OSTs for (chronologically) Portal Stories: Mel, Portal: Prelude, Portal, Rexaura, Portal Pro, Portal 2 and Aperture Tag. Skloomax (talk) 17:31, 14 July 2017 (UTC)