Duos have rarely been as starry as this since Gidon Kremer was playing with Martha Argerich. Each plays a solo work: For Mr. Trifonov, it will be Mozart's K. 397 Fantasia while Mr. Kremer takes on Mieczyslaw Weinberg's Solo Violin Sonata No. 3. Together they'll perform a work from each composer, as well as Schubert's Fantasy in C (D. 934).