"You go through this feeling to then be in freedom." The notorious photographer and bouncer talks about the ethos behind selecting the world's hardest door, early life in East Berlin and Berghain's 20th anniversary. Today's Exchange guest is Berghain's infamous figurehead and doorman Sven Marquardt, who was born and raised in German Democratic Republic (GDR)-era East Berlin. He lived a rebellious life as a punk in Prenzlauer Berg, which banned him from entering Berlin's central districts because of how he looked. It was during these years that he congregated with fellow East Berlin new wave kids and began documenting their relationships and his own life through photography. When the wall fell, electronic music and the exciting scene that arose in the DDR's vacuum became Marquardt's focus. He started partying at fetish parties and bouncing doors at new clubs alongside his brother. In this interview, he talks to RA Exchange producer Chloe Lula about how Berlin has evolved from his adolescence in the post-war years and his thoughts on the changes erasing institutions in the city's clubbing landscape today. He also reflects on the contemporary nightlife industry and how Berghain's policies have shifted with the times, initially catering to an almost exclusively male crowd but now welcoming a demographic more representative of the diversity of people who make up club culture. While German politics and the rise of the right wing have deeply affected him, he says, he recognizes the opportunities it enables for his community to use art and culture as a reactionary, countercultural force. Listen to the episode in full. Photo by Torsten Ingvaldsen. Audio overdubs by Marios Gavrilis.