"Dokumentaroper" is one of Helmut Oehring's works, where he integrates deaf persons. Helmut Oehring writes in the liner notes: "All of my pieces are docudramas. They hinge on the problem of why people have language and interpersonal relations at all. My music is also a response to a deficiency, a substitute for things found wanting, the filling of an empty space, the pinning down of things loose and detached. My mother tongue was sign language. It was not until I was four-and-a-half that I learned the language of speech. My parents were both deaf from birth. In the meantime writing music has become of existential importance to me."