Ralph H. Christoph is one of the founders of the c/o pop festival in Cologne. From 2004 to 2007, he was the festival's program director.

Since 2014, he has been in charge of the c/o pop Convention. For various partners (including the Goethe Institute), he initiated numerous projects in India, China and Brazil, among others. Previously, he worked as a writer and editor (including SPEX). In 1998 he opened the Cologne club STUDIO 672 and ran an artist and event agency.