Jost's piano quartet is an homage to the outstanding Japanese film director Akira Kurosawa and his adaptations of three Shakespeare tragedies ('Hamlet', 'King Lear', 'Macbeth'). Although 'Spinnwebwald' falls back on Kurosawa's film title 'Das Schloss im Spinnwebwald' ('Macbeth'), the work not only refers to a single film but also expresses the prevailing mood. In accordance with Kurosawa's conversion of language into gestures, the composer manages, with plenty of imagination, to convert visual impressions into expressive colourful sounds which captivate players and listeners alike.