Tracklist
| Tragedy | 4:28 | |
| Earth | 4:05 | |
| Travel | 4:05 | |
| Rain | 3:40 | |
| Air | 2:35 | |
| Tame | 3:35 | |
| Escape | 3:10 | |
| Tower | 3:20 | |
| Rescue | 3:30 | |
| Adaptation | 4:00 | |
| Agony | 4:40 | |
| Earth (Material Version) | 4:05 | |
| Restraint | 3:30 | |
| Timber | 5:08 | |
| White Nights | 4:16 |
Versions
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| Tetra (CD, Album) | Antler Records | Antler 074 CD | Belgium | 1988 | |
| Tetra (LP) | Antler Records | Antler 074 | Belgium | 1988 | |
| Tetra (LP) | Antler Records, MNW | Antler 074 | Sweden | 1988 |