The Belgian percussionist Tom De Cock plays Raphaël Cendo's 2002 work scratch data. I came upon this video after listening to Cendo's rigorously alarming piece Introduction aux ténèbres, a setting of texts from the Book of Revelation, on the NEOS CD Donaueschinger Musiktage 2009 (vol. 2). At a CDMC conference in 2008, Cendo joined Franck Bedrossian and others in discussing issues of excess, saturation, monstrosity, chaos, mutilation, and, naturally, black metal. Introduction aux ténèbres partakes of such bitter fruit; scratch data finds the composer in a much mellower mood.