A first box set containing 16 CDs, presenting more than 40 works and 18 hours of listening, including never released before music by Denis Dufour and texts in a detailed booklet (Fr/Eng/Ger). With his morphological and expressive approach to sound, Denis Dufour works on pieces in a constant state of renewal and on ideas that are specific to each piece. This results to a work looking like a large fresco in which no theme sounds alike, containing varied and breathtaking soundscapes and a patchwork of sounds, thoughts and colors that enable us to appreciate the sheer imagination as well as the consistence of his style. By deliberately but effortlessly opening his music to all sounds, Denis Dufour works with liberty, independence, rigor, and craftsmanship so refined that makes one forget oneself. Every second of sound is wrapped by a conscious ear so that so that his work contains no trace of automatic tools. Composer, teacher, researcher, director of label and festival, Denis Dufour, has greatly contributed to the development of acousmatic art in the world during forty years. First volume of the integral of his acousmatic work, this boxset regroups 44 works of Denis Dufour, composed between 1977 and 2020. Each one of the 16 discs is conceived as a listening program, which provides to listeners an immense landscape. The second volume is expected in 2022, and his instrumental work is under publication as well.