While on vacation in Saint Véran in the Alps in the early 1980s, Jean Dupuy noticed that larch wood had outstanding sonorous qualities. Many years later in August 2004 he asked some friends to equip themselves with previously cut mountain larch branches and to walk through the village of Pierrefeu dragging these “musical instruments” (an expression by the artist) on the ground. The concert started on the wooden terrace of Jean Dupuy’s house and continued through the narrow streets of the village. The musicians walked slowly, producing repetitive sounds echoing to the rhythm of their steps. The protagonists ended their musical walk by singing an old surrealist nursery rhyme entitled Rosalie. This outdated song had nourished Jean Dupuy’s childhood. A film produced by Guy Mathieu recorded this experience. It shows only the moving shadows of the bodies and branches.