Marcel Pérès (France) – Marcel Pérès has always sought to grasp the true nature of music in order to understand why and how men invented it and use it. Composer, historian, singer and keyboardist, Marcel Pérès created the ensemble Organum in 1982, then, in 1984, at the Royaumont Foundation, the CERIMM (European Centre for Research on the Interpretation of Medieval Music), and in 2001, at Moissac, the CIRMA (Centre Itinérant de Recherche sur les Musiques Anciennes). He composed about thirty works, recorded some fifty records that explore the different aspects of the liturgical songs of the Latin Church over the centuries and published several books and articles on the relationship between music and the memory of societies as well as the role of music in the processes of the construction of a ritual.