This DLC is just MP3 files.
This DLC contains the following songs:

1. Starting Act
   
2. Story
   
3. Red Block Zone
   
4. Morning Mist
   
5. Piano Ambience
   
6. Memory
   
7. Forest Vibes
   
8. Peaceful Clouds
   
9. Simple Piano
   
10. Lazy Waltz
    
11. Afternoon
    
12. Game Wave