“There’s a certain muteness to most ambient music that eludes criticism, made wordlessly, unlikely to illicit verbal or written response. In the context of listening to — and indeed writing about — Xerrox Vol. 4, the fourth instalment of a planned five in Carsten Nicolai aka Alva Noto’s Xerrox series, in which the German composer undertakes a decade-plus long (on-going since 2007) investigation int”
