Faces, Spaces, and Traces: A Prelude to Experimental Encounters / Kathleen Coessens -- PART ONE: CONTRASTING FACES. Down With the Experiment! Long Live the Process! or, Dance Doesn’t Exist / Efva Lilja and Kathleen Coessens -- The Art of Risk Taking: Experimentation, Invention, and Discovery / Chaya Czernowin and Kathleen Coessens -- PART TWO: CHALLENGING MATERIAL SPACES. Thingification of Compositional Process: The Emergence and Autonomy of Extramusical Objects in Western Art Music / Svetlana Maraš and Kathleen Coessens -- Roll Over Czerny / Frederik Croene and Kathleen Coessens -- Austerity Measures and Rich Rewards / David Gorton, Christopher Redgate and Kathleen Coessens -- Cooperation and Collaboration between Interpreter and Composer in Electroacoustic Music / Sebastian Berweck and Kathleen Coessens -- Trans-form: Sketches, Experiments, and Concepts in Artistic Creation / Jan C. Schacher and Kathleen Coessens -- PART THREE: EXPERIMENTAL DIALOGUES WITH TRACES. Rational Spaces: The String Quartets of Ben Johnston as Experimental Process / Bob Gilmore and Kathleen Coessens -- The Need for Artistic Experimentation When Preparing Organum Duplum for Performance Léonin and Pérotin and Twelfth and Thirteenth-Century Polyphony from L’Ecole de Notre Dame / Penelope Turner and Kathleen Coessens -- “Association”: A Way of Artistic Experimentation That Can Expand Interpretation Possibilities / Valentin Gloor and Kathleen Coessens -- PART FOUR: NEGOTIATING EXPERIMENTAL(LY) SPACES AND FACES. From Experimentation to Construction / Richard Barrett and Kathleen Coessens -- Exper-iment, Exper-ience, Exper-tise: Practice-as-Research in Jazz Performance / Steve Tromans and Kathleen Coessens -- Improvisation as Experimentation in Everyday Life and Beyond / Anne Douglas and Kathleen Coessens -- Composition as Improvisation/Improvisation as Composition / David Horne, Melinda Maxwell and Kathleen Coessens -- The Kunstorchester Kwaggawerk Project: An Original Cultural Education Programme / Reto Stadelmann and Kathleen Coessens -- An Afterthought to Experimental Encounters / Kathleen Coessens