Hinterzimmer Records is a label based in Bern, Switzerland. The aim is to search with an open focus and open ears for a wide range of musical creations that are generally held together by the musicians' passion and love for music. Hinterzimmer Records is run by two people who are musicians themselves, working together in the experimental doom trio Sum Of R. Reto Mäder is also producing music under the name RM74, Roger Ziegler is a member of the group Herpes Ö Deluxe.