Brian Ferneyhough's four short pieces Dum Transisset I-IV use plainchant fragments from the Renaissance composer Christopher Tye as a basis for re-imagination.
"Four sections which move from statis to horror through rapture to wild freedom: Reliquary, Totentanz, Shadows and Contrafracta. Barely audible tappings, bowings that shape huge twisting contortions, exquisite pppp that makes you listen intently." (Classical Iconoclast - https://classical-iconoclast.blogspot.com/...)
Performance: Arditti Quartet