Born in 1980, Simon Thierrée began playing music at the age of five, choosing the violin as his instrument after his mother bought a recording of the Brahms violin sonatas by Itzhak Perlman and Vladimir Ashkenazy. He graduated from the Conservatoire National de Musique de Rennes (France) in music education, violin and composition in 1997. He then trained in jazz with Pierre Blanchard (violin), before returning to classical music with Maestro Igor Tkatchouk, and finally obtaining a diploma in conducting from the Royal Conservatory of Brussels in 2020.
After some experience as a professional violinist and violin teacher in various classical and jazz groups between 1996 and 1999, he devoted himself to composing and performing music for the stage in various circus companies (Les Oiseaux Fous, Rital Brocante, Circo Bidone, Roberto Magro...). He continues to work in the circus world with artists such as Petr Forman. He wrote his first CircOpera in 2022, CircoInCanto.
He lived with travelling circus companies from 1999 to 2006, in horse-drawn caravans and vans. He also performed extensively as a street musician during this period, meeting Gypsy musicians from Romania whose language he became familiar with over the years.
He then moved to Brussels, Belgium, where he joined the contemporary dance group Les SlovaKs, for whom he created and performed his compositions and improvisations live. He has composed for dance shows (Rodrigo Pardo, Anton Lachky, Judith Sanchez Ruiz, Milan Tomasik, Mohamed "Ben Fury" Benaji, Joost Vrouenraets and others) in Belgium, Finland, the United States, Italy, Brazil, the Netherlands, Mali, the DRC and the Czech Republic since 2006.
Since 1996, he has created over 40 pieces for the stage, in a variety of styles and for instruments ranging from soloists to symphony orchestras.
He has also produced, directed and conducted soundtracks for short and feature films, fiction documentaries and commercials (directors: Olivier Peyon, Yvan Lemoine, Raphaël Balboni & Ann Sirot, Antoine Cuypers, Pierre Guicheney, Nicolas Rumpl).
He has performed and/or recorded with musicians such as Tcha Limberger, Mandino Reinhardt, Vinicio Capossela, Loran Delforge A.K.A. Before Tigers, arranged music for Belgian singer Ivan Tirtiaux, the group Applause and composer Manuel Roland, and has seen his compositions played by the Brussels Philharmonic Orchestra, the Pilsen Philharmonic Orchestra, the Umeå Symphony Orchestra, the South Bohemian Theater Orchestra and the Orchestre Symphonique tunisien.
He is a member and co-founder of the composers' collective NONE, with Loran Delforge and Thomas Vaquié.
In 2012, he released a CD of his work for string orchestra, Musique pour Orchestre à Cordes. In 2022, he released a dozen vinyls of his personal works on the Internet, and was selected as French resident artist in Lebanon in 2021 and in Tunisia in 2022 by the Institut français.
He won the Wallonie-Bruxelles prize in the Proquartetto international composition competition for his Fantaisie en huit miniatures string quartet.