Christian Schubert: Sound (Sound)1975-05-10

Christian Schubert: Sound (Sound)1973-01-26

Christian Schubert: Sound Mixer (Sound)1983-11-11

Christian Schubert: Sound (Sound)1971-03-25

Christian Schubert: Sound Mixer (Sound)1985-04-26

Christian Schubert: Sound Mixer (Sound)1979-05-21