In his Kongsgaard Variations (2006) Swedish composer Anders Hillborg takes the Arietta-theme from Beethoven’s last piano-sonata No. 32 in C minor Op. 111 as the basis for an evocative 16-minute string quartet. Beethoven’s sublime music drifts strangely through the centuries and is warped vaporised and refashioned as if in the words of Hillborg the Arietta ‘is dreaming yet another variation on itself’.