A venerated pianist puts sonatas on a pedestal at Strathmore

For the past two years, Sir András Schiff has been focused on "The Last Sonatas" -- a three-concert traversal of the final piano sonatas of Haydn, Mozart, Beethoven and Schubert. These concerts, which he has performed around the world, arrived in Washington last March and have been among the city's signal cultural events. On Wednesday night at Strathmore, the final installment was all one had come to expect from the first two: flawless, self-effacing, understated and spiritual.