There was no soundtrack released for the 1974 film THX 1138 until 2007, when a limited edition CD appeared in the US. Long since out-of-print, this special edition contains one bonus track.
 
1. Logo (00:08)  
2. Main Title/What’s Wrong? (03:13)  
3. Room Tone/Primitive Dance (01:45)  
4. Be Happy/LUH/Society Montage (05:05)  
5. Be Happy Again (Jingle of the Future) (00:56)  
6. Source #1 (05:17)  
7. Loneliness Sequence (01:27)    
8. SEN/Monks/LUH Reprise (02:43)  
9. You Have Nowhere to Go (01:10)
10. Torture Sequence/Prison Talk Sequence (03:41)
11. Love Dream/The Awakening (01:46)
12. First Escape (03:01)
13. Source #3 (03:33)
14. Second Escape (01:14)
15. Source #4/Third Escape/Morgue Sequence/The Temple/Disruption/LUH’s Death (08:29) 16. Source #2 (03:16)
17. The Hologram (00:54)
18. First Chase/Foot Chase/St.Matthew Passion (End Credit) (07:40)
19. THX1138 Theme (12th House Remix) (04:50)