van der Sandt, Johann, Helmut Schaumberger, Antonella Coppi, Sanna Salminen, and Motje Wolf. “Singing Is What We Do (together) - Redefining ‘together’. A Comparative Study”. Formazione & insegnamento 19, no. 3 (December 31, 2021): 028–054. Accessed November 22, 2024. https://ojs.pensamultimedia.it/index.php/siref/article/view/5260.