Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.8 | At the Edge of Psychonoetic Worlds - Part VIII | 3:34 | Mathias Grassow | STEP IV - The Early Years (1990-1992) - "At the Edge of Psychonoetic Worlds" | Mathias Grassow | Album + Compilation |
| [no label] (Special purpose label – white labels, self-published releases and other “no label” releases) | |
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