Pianist, composer and sound artist Hans Otte is still undervalued in Europe, and the Anglo-American cultural scene just starts to notice him.Ingo Ahmel's bilingual study of his biography and artistic work highlights Otte&rsquo,s view of life and his aesthetical orientation, providing the fundamentals for an adequate reception.At the centre of the book are the solo piano cycles Das Buch der Klänge (The Book of Sounds, 1979-82) and Stundenbuch (Hours Book, 1991-98) as well as the related sound installations Atemobjekt (Breath Object, 1970) and NamenKlang (Name Object, 1995). In addition, the publication includes digital media containing sound examples and excerpts from the Otte Media Pool (OMP), and for the first time the authorized catalog of works (Otte Werkverzeichnis, or OWV).