Katarzyna Stasiewicz graduated with distinction from the Fryderyk Chopin University of Music in Warsaw, where she studied cello in the class of Professor Andrzej Bauer, and completed postgraduate studies in music market management. She has collaborated with leading Polish festivals, including Actus Humanus (2016–2022) and Auksodrone (2017–2023). From 2021 to 2024 she worked with the Ludwig van Beethoven Association, producing chamber and symphonic concerts within the Beethoven Easter Festival and the Festival of Romantic Compositions. Since 2023 she has been executive producer for selected projects of Hashtag Ensemble. Combining musical background with management expertise, she contributes to the Polish music scene by ensuring both artistic quality and professional event organization.