Rosa Hoelger has been performing with songwriting and punk projects since 2015. She studied Sustainable Business Management at the Hochschule für nachhaltige Entwicklung Eberswalde and wrote her master's thesis on the sustainability of Berlin music venues. As sustainability manager at The Changency – Agentur für nachhaltigen Wandel, she develops strategies and concepts for more sustainability in the music industry. Among other things, she was involved in the implementation and evaluation of Plant A SEEED, the first scientific study on sustainability at large concerts in Germany. As a project manager, Rosa took care of the project "TICKET TO RIDE" in cooperation with AnnenMayKantereit and Fridays For Future, which focuses on environmentally friendly visitor mobility at large events.