Four-disc 'Portal 2: Songs To Test By (Collector's Edition)' set available October 30th

Portal 2: Songs To Test By (Collector's Edition), a four-disc set featuring the complete soundtrack for Portal and Portal 2, will be available on October 30th, Valve and record label Ipecac Recordings announced recently.

Valve released a three-volume digital version of the Portal 2 soundtrack, Songs To Test By, for free shortly after the game launched last April. The soundtrack won the award for Outstanding Achievement in Original Music Composition at the 15th annual Interactive Achievement Awards earlier this year.

According to Valve and Ipecac, the physical Collector's Edition's fourth volume is a 13-track disc of previously unreleased songs from the original Portal. The set also includes a mini-comic, "Turret Lullaby," that is available on the Portal 2 website.

Check out the Collectors Edition's full list of tracks below.

Volume/Disc #1
1. Science is Fun
2. Concentration Enhancing Menu Initialiser
3. 9999999
4. The Courtesy Call
5. Technical Difficulties
6. Overgrowth
7. Ghost of Rattman
8. Haunted Panels
9. The Future Starts With You
10. There She Is
11. You Know Her?
12. The Friendly Faith Plate
13. 15 Acres of Broken Glass
14. Love as a Construct
15. I Saw a Deer Today
16. Hard Sunshine
17. I'm Different
18. Adrenal Vapor
19. Turret Wife Serenade
20. I Made It All Up
21. Comedy = Tragedy + Time
22. Triple Laser Phase

Volume/Disc #2
1. You Will Be Perfect
2. Halls of Science 4
3. (defun botsbuildbots () botsbuildbots ))
4. An Accent Beyond
5. Robot Ghost Story
6. Die Cut Laser Dance
7. Turret Redemption Line
8. Bring Your Daughter To Work Day
9. Almost At Fifty Percent
10. Don't Do It
11. I AM NOT A MORON!
12. Vitrification Order
13. Music of the Spheres
14. You are Not Part of the Control Group
15. Forwarding the Cause of Science
16. PotatOS Lament
17. The Reunion
18. Music of the Spheres 2 (Incendiary Lemons)

Volume/Disc #3
1. Reconstructing More Science
2. Wheatley Science
3. FrankenTurrets
4. Machiavellian Bach
5. Excursion Funnel
6. TEST
7. The Part Where He Kills You
8. Omg, What has He Done?
9. Bombs for Throwing at You
10. Your Precious Moon
11. Caroline Deleted
12. Cara Mia Addio
13. Want You Gone
14. Spaaaaace
15. Space Phase
16. Some Assembly Required
17. Robot Waiting Room #1
18. Robot Waiting Room #2
19. Robot Waiting Room #3
20. Robot Waiting Room #4
21. Robot Waiting Room #5
22. Robot Waiting Room #6
23. You Saved Science
24. Robots FTW

Volume/Disc #4
1. Subject Name Here
2. Taste of Blood
3. Android Hell
4. Self Esteem Fund
5. Procedural Jiggle Bone
6. No Cake For You
7. 4000 Degrees Kelvin
8. Stop What You Are Doing
9. Party Escort
10. Your Not a Good Person
11. You Can't Escape You Know
12. Still Alive
13. Still Alive (J.C. Mix)