Sebastian Bertoncelj

Sebastian Bertoncelj is a versatile soloist, chamber musician and pedagogue. Born in a musical family in Slovenia, he is strongly rooted in his nation’s artistic legacy and frequently shares his music and knowledge with audiences far behind its borders.

As a soloist he has collaborated with orchestras such as Slovenian Philharmonic Orchestra, RTV Ljubljana, Music academy of Ljubljana Symphonic and Chamber orchestra, HMDK Stuttgart symphony orchestra and Bled festival orchestra and conductors P. von Steinaecker, E. Shao, R. Baumann, S. Dvoršak, L. Voltolini, N. Firšt, Z. Bičanin on works by Tchaikovsky, Dvořàk, Rachmaninov, Kabalewsky, Shostakovich, Haydn, Bragato and Bloch.

In addition to this, he has performed concerts for Festival Ljubljana, Jeunesse musicale, Cellofest Ljubljana, Imago, Festival Bled) Festival Velenje, Kogojevi dnevi, Incontri Musicali Spoleto, Teatro Verdi Trieste, Lucca Classica, Nei suoni dei luoghi, Musica da camera Cividale, Teatro Luigi Bon, Badia Musica).

As a passionate chamber musician, Sebastian has collaborated with renowned musicians such as Anna Kandinskaya, Andrea Rucli, Christopher Tun Andersen, Emma Steele, Solenne Païdassi, Aylen Pritchin, Wonji Kim-Ozim, Emile Cantor, Mark Gothoni, Boštjan Lipovšek, Lorenzo Cossi, Luka Ljubas and late Klaus Maetzl. He frequently appears with Salzburg-based Accio piano trio.
After his studies at Ljubljana’s Conservatory and Academy of Music with Miloš Mlejnik, he broadened his education in Luzern and Salzburg with masters Christian Poltéra, Enrico Bronzi and Götz Teutsch. In 2025, he finished his soloist diploma „Konzertexamen“ at HMDK Stuttgart under Conradin Brotbek with distinction.

A sought-after teacher, he holds positions at Ljubljana and Maribor Conservatories of music, Celje Music high school, works as Assistant to the cello class of Ljubljana University, Academy of Music and regularely gives masterclasses to young and advanced cellists all over Europe.