As an independent promoter, agent and label manager, Koen has worked in European underground scenes for over two decades. In 2005 he co-founded fiercely independent label Subroutine Records, releasing new music from over fifty acts. His platform Yugofuturism focuses on acts from Central and Eastern Europe – from the Baltics to the Balkans – and the Netherlands.
He is also currently a lecturer at the University of Groningen, curator of the Peel Slowly and See festival, external promoter at venues WORM Rotterdam & OCCII Amsterdam venues and a frequent speaker at European conferences on topics such as DIY touring, grassroots cooperation and music ecosystems. In 2023 he initiated the nomadic festival VIKENDICA, bringing a ‘convoi exceptionnel’ of adventurous European acts to iconic Dutch venues.