Guilhem Kusnierek is a prize winner in many international competitions such as Lieksa (Finland), Porcia (Italy) and Jeju (South Korea). Most significantly, in 2015, Guilhem won the third prize at the 64th edition of the International Music Competition of the ARD in Munich. He has performed as a soloist in concerts with orchestras such as the Münchner Kammerphilharmonie, the Rundfunkorchester des Bayerischen Rundfunk, the Jeju Philharmonic Orchestra and the Joensuu City Orchestra.
Guilhem was born into a musical family in Clermont-Ferrand in the heart of France, and began playing trombone and piano at the age of seven. He studied the trombone with Abel Thomas in Clermont-Ferrand in the regional conservatoire before continuing his studies with Michel Becquet and Alain Manfrin at the Conservatoire National Supérieur de Musique de Lyon.
At the age of just twenty, he won the position of principal trombonist with the Orchestre National de Montpellier and has been playing as an orchestral musician ever since. Guilhem has performed with many famous european orchestras such as the Orchestre National de France, the Orchestre Philharmonique de Radio France, the Orchestre National de l'Opéra de Lyon, the Orchestre Philharmonique du Luxembourg, the Ensemble Dissonance and worked under the baton of world class conductors such as Bernard Haitink, Myung-Whun Chung, Stanislaw Skrowaczewski, Karel Mark Chichon and Daniele Gatti.
Since 2010, Guilhem Kusnierek is co-principal trombonist of the Deutsche Radio Philharmonie Saarbrücken Kaiserslautern.
Baroque music takes a very important place in the life of Guilhem Kusnierek.
In 2016, he won the first prize in the only existing international baroque trombone competition, of RICA in Toulouse. He has performed with many of the most prestigious baroque ensembles such as the "Concert lorrain", "Arsys Bourgogne" with Pierre Cao,"Pulcinella" with Ophélie Gaillard and "Insula Orchestra" with Laurence Equilbey.
He is a member of the group "Heavenly Wood", which is under the musical direction of Bernhard Stilz.
Guilhem Kusnierek is influenced by the french baroque school of Daniel Lassalle, world-renown baroque trombonist and member of the "Sacqueboutiers de Toulouse".
Since 2017, Guilhem Kusnierek teaches at the Hochschule für Musik Saar in Saarbrücken.