Schwankungen am Rand has been filmed by us twice – once conducted by Emilio Pomàrico with the Rundfunk-Sinfonieorchester [Radio Symphony Orchestra] Berlin (Radialsystem Berlin, January 2015), once with Brad Lubman and the Ensemble Modern Orchestra (Frankfurt/Wiesbaden, November 2015). Originating from the detailed partial rehearsal recordings with the Ensemble Modern are three films, each approximately 15 minutes long (winds / strings / thunder sheets, and pianos). These are supplemented by rehearsal scenes with the Rundfunk-Sinfonieorchester Berlin, in which Helmut Lachenmann explains not only playing techniques, but also such piece-specific issues as the “throw-ins” and the use of the “pack” or “baking parchment paper.” The rehearsals sometimes took place in German, sometimes in English – the German-speaking passages in the films are subtitled in English. The concert recording shows the performance in Berlin, which was particularly convincing due to the spatial arrangement in the radial system.