When classical superstar Martha Argerich needs a partner for a piano duo, she turns to another virtuoso, Lilya Zilberstein. When you hear her play, with equal shares of dazzling technique and exhilarating style, it's easy to understand why. Zilberstein has a knack for fluid phrasing and effortless lyricism, while losing none of her characteristic articulation and precision. The resulting sound is equal parts sophisticated and accessible. The Russian-born pianist's Thursday program at Kilbourn Hall will include some early Beethoven: 24 Variations on "Venni Amore" by Vincenzio Righini and Sonata No. 23, also known as "Appassionata." Zilberstein will also play Scriabin's Sonata in F# Minor, No. 3 and Rachmaninoff's "Six moments musicaux."