Per aevum (through time) takes the listener on the path of a trope «Cunctipotens genitor Dei» and its melody, from its monodic birth in the tenth century to the polyphonic apogee of the Renaissance. Century after century, the sound journey is established in a vocal and instrumental dialogue with one, two, three, four or five voices according to the times and the
musicians. Sometimes organum written or improvised, sometimes diminutions, motet or mass movement, the greatest composers (Machaut, Binchois, J. de Anchieta, Isaac, etc.) used it as a starting point to craft luminous polyphonies. To better illuminate the periods visited, each piece is associated with another musical work of the same period testifying to another genre or subject in order to complete the aesthetic lighting. The listener crosses the ages by following a common thread through six centuries of stylistic varieties and masterpieces mixed with little-known pieces.