Sumptuous sound and breathtaking virtuosity are the hallmarks of the Vienna Philharmonic chamber ensembles’ regular appearances at the Pierre Boulez Saal. In their upcoming concert, they will present a program of Austrian music that incorporates stark contrasts: with Mozart’s large-scale Divertimento in D major K. 334 and Werner Pirchner’s 1987 Emigranten-Symphonie, in which the Tyrolean jazz musician and composer, who died in 2001, reflects on the (musical) history of his homeland in his highly idiosyncratic and subtly ironic style.