He practices chamber music with Natalie Dessay, Karine Deshayes, Angelika Kirchschlager, Stéphanie d'Oustrac, Wolfgang Holzmair, Donna Brown, Isabelle Faust, David Grimal, Anne Gastinel, Diemut Poppen, Matt Haimovitz,[3] Christophe Desjardins, the Moraguès wind quintet, the Ysaÿe, Takács, Ébène, Modigliani, Voce, Chilingirian, Vanbrugh String Quartets etc., actors Philippe Torreton, Françoise Fabian, Judith Magre, Micheline Dax, Roland Bertin, the Solistes de Lyon/Bernard Tétu... Cassard's name is closely linked to Debussy, a complete recording of which he made in 1994[4] and that he played in one day and four concerts in Besançon, Paris, Marseille, Angoulème, London, Dublin, Sydney, Tokyo, Lisbon, Vancouver and Singapore.
He became an adviser to the "classical" music programme at the Fontdouce Abbey [fr] Festival (Charente-Maritime), and hired Natalie Dessay, Baptiste Trotignon, Dominique Merlet, Anne Queffélec, Michel Dalberto, Yevgeny Sudbin, Geoffroy Couteau,[9] Roger Muraro, Nelson Goerner, Cédric Pescia, etc.
For "La Dolce Volta" label, Philippe Cassard returned to Schubert, with sonata D959 and works for piano for 4 hands (Fantaisie D940, Lebensstürme D947, Rondo D951) with the Swiss pianist Cédric Pescia.
He invited artists such as Martha Argerich, Radu Lupu, Aldo Ciccolini, Jordi Savall, the Alban Berg Quartett, Felicity Lott, Augustin Dumay, Leif Ove Andsnes, Nelson Freire, Paul Meyer, André Dussollier, the BBC Philharmonic, the Orchestre national de France etc.
Philippe Cassard is the author of an essay dedicated to Schubert (Actes Sud - Classica, 2008) and an interview book with Jean Narboni and Marc Chevrie Deux temps trois mouvements (Capricci, 2012) devoted to music and cinema.