The 12 Cellists - DocumentaryChristoph Igelbrink, The 12 cellists of the Berliner Philharmonic, Rachel Helleur, David Riniker, Richard Duven, Solene Kermarrec, Martin Löhr, Nikolaus Römisch, Olaf Maninger, Martin Menking, Stephan Koncz, Dietmar Schwalke, Knut Weber & Ludwig Quandt