The violist Guillaume Leroy performs a varied and unexpected repertoire and seeks to contribute to the development of the original repertoire for viola. A musician with many facets, he is also an accordionist and conductor.  

In the course of his career, Guillaume Leroy has performed as a soloist with the Orchestre Prométhée, the Orchestre Hélios, the Orchestra of the Haute Ecole de Genève, the Orchestra of the Hochschule de Bern, in recital and chamber music at the Estivales de Megève, the Flâneries Musicales de Reims, the Ravéliades de Saint Jean de Luz, the Schubertiades de Sion, the Musiques d’été d’Epernay… as well as in orchestras such as the Paris Opera, the Radio France Philharmonic Orchestra, the Orchestre du Capitole de Toulouse, the Orchestre de la Suisse Romande, the Camerata de Bern, the Orchestre National de France, the Geneva International Orchestra. .. Guillaume Leroy is very attached to chamber music and performs with the Hadès Quartet and various artists such as Régis Pasquier, Aurélien Pascal, Victor Métral, Alexis Cardenas, Giorgi Kharadze, Hanchao Jiang, Yardani Torres-Maiani… He has made several international tours and performed in prestigious festivals and venues such as the Albert Hall in Istanbul, the Paderewski Hall in Lausanne, the Théâtre des Abeilles in Geneva, the Schmiedenhof Hall in Basel, the Gabriel Dorziat Theatre in Epernay, the large auditorium of the Conservatoire in Reims, the Oriental Arts Centre in Shanghai, the National Arts Centre in Beijing… 

A musician without borders, he is involved in other groups such as the “Quintet Del Angel” which he formed to celebrate the music of Astor Piazzolla, where he plays accordion and bandoneon, or in the Astéria ensemble led by the Gypsy-Andalusian violinist Yardani Torres Maiani, with whom he also forms the Duo Voyageur, and which composes original music combining flamenco and classical music. 

Born in Epernay, Guillaume Leroy began his musical studies at the Conservatoire de Reims before studying with Roman Balashov at the Tchaikovsky Conservatoire in Moscow, where he benefited from the advice of Yuri Bashmet. He then continued his training with Nobuko Imai, Miguel Da Silva and Gabor Takacs-Nagy at the Haute école de musique de Genève. In the course of numerous master classes, he received advice from Antoine Tamestit, Veronika Hagen, Marc Lubotsky, Michel Beroff, Jean-François Hesser, Vladimir Bukac, some of the members of the Emerson, Jerusalem and Berg quartets.

He has won awards and prizes at the international competitions “21st century Art” in Kiev and Johannes Brahms in Pörtschach. 
He is also a conductor and has participated in collaborations with the Orchestre National d’Île-de-France, the Orchestre National de Metz, the Moravian Philharmonic Orchestra, the Vilnius State Orchestra.