Between 2016 and 2022, Antonia regularly achieved success in the German ‘Jugend musiziert’ competitions, winning first prizes for several years in a row. She ended up as a finalist or a semi-finalist in several other competitions, and was selected from over a hundred applicants as one of three violinists for the mini masterclass with Christel Lee as part of the 2023 ARD Competition. In 2024, she was awarded first prize at the Vienna International Music Competition. 

Antonia has been a member of the German National Youth Orchestra since 2021 and of the Niels Gade Chamber Orchestra in Leipzig since 2025.

In 2023, the German violinist took part in the HMTM Young Academy in Munich and was selected to attend the epoche_f contemporary music masterclass at the International Ensemble Modern Academy.

In November 2025, she was invited to perform a solo recital as well as Bach’s Violin Concerto in E major (BWV 1042) and Double Concerto in D minor with the Orquesta Filarmónica de Lima. 

Antonia Kreuzer currently plays a violin from the workshop of Vlado Tilev in Sofia, Bulgaria, which was made especially for her in 2024.