esta pista no es mía, creditos a quién corresponda.

FAITH The Unholy Trinity - Super Miriam

Song taken from Volume 1 without boring stuff.

Audio Format: FLAC

Check and download all OST at: http://www.thinkwithportals.com/music.php

Soundtrack owned by Valve Corporation.

Portal 2 - Bombs For Throwing At You

Lethal Company Soundtrack - Boombox Song 5

You can download the whole albums here: http://www.thinkwithportals.com/music.php 
Otherwise, you can just download the singular track straight from here.

Portal 2 Soundtrack - Halls Of Science 4

Margin Call

One of the many tracks from the Portal 2 OST, Created by Valve

Portal 2 OST - Reconstructing More Science

Josh Marsh