Ralph Christoph is a founding member of c/o pop festival and convention in Cologne. c/o pop has been an independent event for music and creative industries since 2004. Since 2013 he is the program director of c/o pop convention. Before he started c/o pop, he was running a club (Studio 672),  had a booking agency, managed a band, wrote and translated books, and was an editor for SPEX magazine.