Moving on from the concepts of nomos, measure and harmony, typical of the Greek age - when the mathematical rule and the concept ofmodule represent the foundation of the very principle of musical and architectural composition - going beyond the Middle Ages, the Renaissance rediscovery of the Divine Proportion is celebrated, through the Baroque age, then the eighteenth and nineteenth centuries, to the early twentieth century explored through four emblematic artists: Schoenberg, Gropius, Strawinsky and Gaudi.