Forma Tadre's music spans numerous styles, from darkwave / Neue Deutsche Welle to industrial / EBM to ambient.
[4] In 1996, Andreas released his first album as the sole member of Forma Tadre, Navigator, which was a marked style departure from the previous, more traditional three-piece incarnation of the band.
Andreas' interests in the occult and H. P. Lovecraft informed several of the tracks on Navigator including "Date Unknown," "Celebrate the Cult," "Gates," and "Mesozoic Tree Ferns.
[5] The project, named Eisriesenkönig, released only a single track - a remix of a Forma Tadre song - on the 1996 Off-Beat compilation The O-Files.
[4] As Forma Tadre, Andreas produced many remixes in the 1990s and 2000s for bands such as Haujobb, La Floa Maldita, New Mind, Wumpscut, Assemblage 23, and others.