The popular British 60s radio comedy "Round The Horne" had occasional sketches that were influenced by the style of the show. Regular cast member Hugh Paddick would introduce the "scary" sketch with the words "Inner Sanctum-um-um-um-um-um..." – pretending to echo! This was accompanied by a warbling, quivering, high pitched tone from a Theremin played by an orchestra member. The sketches nearly always ended in confusion as the plots were deliberately circular and convoluted whilst playing up the "spookiness" of the part.