Anne-Madeleine Goulet is director of research at the CNRS. Her field of study is sociability in Ancien Régime Europe and the forms of spectacle that this engendered. Michela Berti is a specialist in music history and responsible for the historical archive of S. Luigi dei Francesi. From 2016 to 2022, Goulet and Berti directed and coordinated the PerformArt project, funded by the European Research Council, from which this book has emerged.