THE latest young pianist from China to excite classical music audiences and earn raves from critics is the 24-year-old Yuja Wang, a distinctive artist with a comprehensive technique. That Ms. Wang is already a musician of consequence was made clear this year when Deutsche Grammophon released her first recording with an orchestra: performances of Rachmaninoff’s Rhapsody on a Theme of Paganini and Second Piano Concerto with the Mahler Chamber Orchestra. The conductor is Claudio Abbado, no less, a towering maestro who is extremely discriminating in his choice of collaborators.