Pengarang: Pickhan Gertrud Pickhan

Pickhan Gertrud Pickhan & Ritter Rudiger Ritter: Meanings of Jazz in State Socialism

Pickhan Gertrud Pickhan & Ritter Rudiger Ritter: Jazz from Socialist Realism to Postmodernism

Pickhan Gertrud Pickhan & Ritter Rudiger Ritter: Meanings of Jazz in State Socialism

Kajanova Yvetta Kajanova: Ubuntu Fusion Music

Kajanova Yvetta Kajanova: Ubuntu Fusion Music

Ritter Rudiger Ritter: Waffe oder Bruecke?

Ritter Rudiger Ritter: Waffe oder Bruecke?