https://www.ilfoglio.it/cultura/2013/01/05/news/il-rigore-non-e-tutto-la-musica-vive-di-liberta-lectio-magistralis-di-pierre-boulez--349266 2020-08-12T05:13:51Z https://www.ilfoglio.it/cultura/2013/01/05/news/il-rigore-non-e-tutto-la-musica-vive-di-liberta-lectio-magistralis-di-pierre-boulez--349267 2020-08-12T05:13:51Z