Hans Otte, the German postminimalist composer of the piano magnum opus Das Buch der Klänge (1979-82), has just died. I never knew much about him – Bill Duckworth was a mutual friend, and informed me – but Das Buch der Klänge is a lovely work, one I’ve played on Postclassic Radio. I gather Otte was not prolific, and was best known as an innovative radio producer for Radio Bremen.