Claudio Abbado and Maurizio Pollini have been performing together for half a century: a unique friendship among artists that continues to reveal new facets. As happened in the middle of May 2011, when the two musicians performed their first joint interpretation of Mozart’s Piano Concerto No. 17 in G major. The evening also included other highlights: works by Berg and Mahler, and performances by the young soprano Anna Prohaska. Claudio Abbado, Maurizio Pollini and Anna Prohaska discuss the concert with Sarah Wills, horn player with the Berliner Philharmoniker.