international chamber music festival, UNESCO world heritage, Bruno Giuranna, Quatuor Terpsycordes, Francesco Piemontesi, Christian Poltera, Pierre Amoyal, Esther Hoppe, Anne Queffélec, Maria Kliegel, Carmina Quartet, Laura Marzadori, Lionel Cottet, Kenji Nakagi, Denis Kozhukhin, Sine Nomine, Cédric Pescia, Gilles Vonsattel, Roberto Arosio