Piotr Fidelus is a pianist, song accompanist, and vocal coach. As a pianist and song accompanist, he performs in various European countries, including at the Festival d’Aix-en-Provence, the Schubertiade in Schwarzenberg, and the Festival Internacional Musica de Marvao in Portugal, as well as in Beethoven Saal in Bonn and the Staatstheater Oldenburg.

His passion for song interpretation and vocal coaching has been significantly shaped by his collaboration with soprano Olga Pasichnyk, with whom he accompanied for several years in vocal lessons and masterclasses. He has also gained valuable insights from Marina Sandel, Christoph Prégardien, Thomas Quasthoff, Brigitte Fassbaender, Christiane Iven, and in the field of contemporary music from Aribert Reimann, Sarah Maria Sun, and Harrison Birtwistle.

He studied piano under Bronisława Kawalla at the Fryderyk Chopin University of Music in Warsaw, song interpretation under Jan Philipp Schulze, and opera coaching under Anne Champert at the University of Music, Drama and Media in Hanover. He worked as a solo coach at the Komische Oper Berlin and the Staatstheater Oldenburg, where he also served as an assistant to the choral direction. Additionally, he accompanied the Girls' Choir Hannover and the Brahms Choir Hannover. In the autumn of 2023, he performed concerts with the Schweizer Vocalconsort under the direction of Marco Amherd.

He collaborated with conductors such as Jordan de Souza, Jörg Haloubek, Howard Arman, Hendrik Vestmann, Alexis Kossenko, and directors such as Barrie Kosky, Harry Kupfer, and Robert Carsen.

Piotr Fidelus lives in Zurich and works as a vocal coach at the Lucerne University of Music, where he also assists in Ulrike Grosch's choral conducting class. Moreover, he teaches piano at the Pfannenstiel Music School in Meilen.