On rental. Commissioned by the Cantiere Internazionale d'Arte of Muntepulciano, this opera is an allegory of piece. The flight of the 'Colomba di Pietra', writes Alberto Colla, 'is impeded by the matter with which it is made, but in that rests eternally the symbol, an idol that negates the possibility to fly freely. For as long as we desire, we will be able to reaffirm our faith in it and coo with its song'.