This master pianist will play two works commissioned as part of his "Brahms Then and Now" project. He opens with the impetuous early Piano Sonata No. 2 in F-sharp minor, then turns to the late "Klavierst�cke," Op. 119. He will also perform Brett Dean's new "Hommage � Brahms," three short works conceived as interludes between the four Brahms pieces. The program offers the New York premiere of Missy Mazzoli's "Bolts of Loving Thunder," which, like Mr. Dean's score, takes Brahms's music as a point of departure. The program ends with Brahms's exhilarating Variations and Fugue on a Theme by Handel.