Deepening the study of baroque treaties and instruments, he founded the Concerto Rococo[1] (with Alice Piérot and Paul Carlioz),[2] a small group of early instruments dedicated to the 18th century harpsichord and concert organ repertoire (Bach, Johann Schobert, Claude Balbastre, Michel Corrette, Mozart, Soler, Haydn...). Through his musicological research, Jean-Patrice Brosse also worked on the restitution of baroque religious services alternating organ and Gregorian chant. (Messe Agatange, Messe de Bordeaux, Vœu de Louis XIII...), and ensured the revision of old works at Éditions J. M. Fuzeau (Johann Schobert, Antonio Soler etc.).
A recitalist, concertist, chamber musician, he was regularly invited to the great French festivals: Festival de musique de La Chaise-Dieu, Sully, Septembre musical de l'Orne, Saou, Saint-Riquier, Lessay, the Nuits musicales du Suquet [fr], Printemps des arts de Monte-Carlo [fr], Prades, Centre baroque de Versailles, Orangerie de Sceaux, Avignon, Aix, Art sacré de Paris, Toulouse les Orgues, Printemps des Arts de Nantes, Radio-France-Montpellier, Albi, Nuits d’Uzès, Festival baroque de Pontoise, Mai de Bordeaux, Saint-Lizier, Comminges, Maguelone, Déodat de Séverac à Saint-Félix-Lauragais, Bourges, La Rochelle, Dijon... He performed in most European countries, in the US, in South America, in the Far East, in tours - often illustrated with lectures and master classes - or in prestigious festivals: Echternach, Brussels, Antwerp, Frankfurt, Berlin, Dresden, Bonn, Düsseldorf, Amsterdam, Rotterdam, The Hague, Vienna, Budapest, Belgrade, Zagreb, Warsaw, Istanbul, Madrid, Milan, Naples, Hong Kong.
Brosse made a series of recordings dedicated to the Parisian harpsichordists of the Enlightenment era (Michel Corrette, Claude Balbastre, Armand-Louis Couperin, Joseph Nicolas Pancrace Royer, Simon Simon, Jacques Duphly...), in parallel with the work he wrote on this subject, Le Clavecin des Lumières[3] for Bleu nuit publisher. He is also the author of Le clavecin du Roi Soleil.[4] The musical and literary richness of this period inspired him to create a poetic evocation, "Le Soir des Lumières", which he shared on stage with the actress Françoise Fabian, as well as a series of concerts-readings Mozart et le clavecin des Lumières and Les derniers jours du Roi Soleil after Saint-Simon's Mémoires. With Marie-Christine Barrault, he also conceived a series of poetic and musical shows around works ranging from the Renaissance to the present day.
