As an independent promoter, agent & label manager, Koen is active in his local and European underground for two decades. In 2005 he co-founded label Subroutine Records, which released music of over 40 Dutch acts. His booking platform Yugo Futurism introduces acts from CEE and Russia (e.g. Repetitor & Shortparis) to The Netherlands and vice versa (e.g. The Homesick & The Sweet Release of Death). He is curator for Welcome to the Village-festival and promoter at WORM Rotterdam & OCCII Amsterdam.