Eva-Maddalena Fleszar is active as a concert violinist. Her artistic work includes contemporary music and occasional collaborations involving period instruments or gut strings.

She received important artistic impulses from Lihay Bendayan, Shlomo Mintz and Hrachya Harutyunyan, whose teaching had a profound impact on her musical development. Alongside, she studied Baroque violin as a second subject, which shaped her interest in historically informed approaches.

Her solo and chamber music work has been recognized with several awards, including prizes at the international  “Marcello Pontillo” competition in Florence an the "Étienne Vatelot – Rampal” competition in Cannes.

Together with pianist Grzegorz Fleszar, she forms Duo Fleszar, which focuses on chamber music for violin, piano, fortepiano and organ, designing programs that span well-known repertoire and lesser-known works.

In 2025, she will appear on a recording released by Naxos (Musiques Suisses) featuring world premiere recordings of works by the long-forgotten Swiss composer Robert Oboussier. She was invited to contribute to this project as a violinist, recording the Sonata Brevis and Sonatine for violin.

She is also a member of the Kubus Kollektiv string quartet, which is dedicated to contemporary music and the development of new concert formats