In the band, Kaya is on vocals and lyrics and Hora is on keyboard, vocals, and programming.
Their name changed to "Schwarz Stein" upon joining Mana's record label Midi:Nette. Mana was formerly a member of the band "Malice Mizer".
Schwarz Stein disbanded in 2004, but both Kaya and Hora continue with their careers in music. Kaya and Hora have both released solo albums.