Opfertag is also the ‘design-side’ of Peter Savelkoul (Above The Ruins, Stahlklang, A Challenge Of Honour, etc.) on the web. Musically Opfertag is a noise project on Stahlklang. From ambient to rhythmical noise you get 7 tracks that are alright but not brilliant. A nice cd, but not Stahlklang’s best material.