Piazza, Laura. “‘Invention of Echoes, Invention of the future’. The Choir Between Direction and Pedagogy in Orazio Costa”. SigMa - Rivista di Letterature comparate, Teatro e Arti dello spettacolo, no. 8 (December 28, 2024): 162–178. Accessed April 19, 2025. https://serena.sharepress.it/index.php/sigma/article/view/11484.