With a characteristic score direction - "con tutta forza": with all strength - Bettina Zimmermann titles the personal biography of her father, Bernd Alois Zimmermann (1918-1970), one of the most significant composers of the 20th century. Along with his most important compositions - including the century opera The Soldiers - a theory of artistic diversity and philosophical considerations entered music history, which became concepts of pluralism and metaphors for the spherical shape of time. The author, who was 18 when her father committed suicide, creates an unusually formal and content-rich portrait using a wealth of previously unpublished documents - conversations with contemporaries, photos, letters, and musical autographs - in which we also get to know Zimmermann as an ambitious photographer and draftsman, as well as a happy family man.