Alessandro Bertinetto is Professor of Philosophy at the University of Turin in Italy and coordinator of ART-Aesthetics Research Turin (Philosophical Seminar). He has been an Alexander von Humboldt Fellow and a member of the Executive Committee of the European Society for Aesthetics. His most recent books are Eseguire l'inatteso. Ontologia della musica e improvvisazione (2016) and Estetica dell'improvvisazione (2021).

Marcello Ruta studied music (classical piano) in Milan and Trieste and obtained his PhD in philosophy in 2010 at the University of Strasbourg and his Habilitation in 2017 at the University of Bern. He is the author of Schopenhauer et Schelling, philosophes du temps et de l'éternité (2014) and co-editor (with Alessandro Arbo) of Ontologie musicale: perspectives et débats (2014).