| 1986 | Helloween (EP) | Vocals (Track 6) |
| 1987 | Halloween (Single) | Vocals |
| 1987 | Hell on Wheels Tour Sampler (Split) | Vocals |
| 1987 | Future World (Single) | Vocals |
| 1987 | Keeper of the Seven Keys Part I | Songwriting (track 3), Lyrics (track 3), Vocals (lead) |
| 1988 | ...Pumpkin Noise (Single) | Vocals |
| 1988 | Save Us (EP) | Vocals |
| 1988 | Dr.
Stein (Single) | Vocals, Songwriting (track 2), Lyrics (track 2) |
| 1988 | Keeper of the Seven Keys Part II | Lyrics (tracks 3, 6), Vocals (lead), Songwriting (tracks 3, 6) |
| 1988 | I Want Out (Single) | Vocals, Songwriting (
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