Jonathan Biss is joined by composer and performer Brett Dean to talk about the latest in Biss' Beethoven Piano Sonata cycle series. They discuss the strength of the different characters presented by Beethoven in each of the evening's sonatas, the way he can somehow unite the tension many composers find between expression and technique, and the audience grills the pair about the consequences of Beethoven's deafness and comparisons between him and his predecessors like Haydn. Biss is also close to the première of a new piano concerto composed by Dean for him, and they talk about the commission and its origins in the Austrian town of Gneixendorf.