The French ensemble Les Dissonances performs Tchaikovsky's Symphony No. 4, without a conductor with leader David Grimal. Usually, this symphony is performed by a large symphony orchestra under the baton of a star conductor. The Dissonances, an homage to the famous Mozart quartet, is a group of artists created by violinist David Grimal. The musical ensemble without a conductor has the absolute liberty of programming choices and offers musicians the opportunity to bring the public a new vision of the major repertoire.