“Duckworth, who claimed to be the founder of postminimalism, wrote some 200 compositions, the best known of which are Time Curve Preludes for piano, composed in the late 1970s, and [1980s choral work] Southern Harmony … One of the first composers to grasp and exploit the possibilities of the internet, [he co-]created iOrpheus, an opera performed on iPods, mobile phones and laptops.”