The roster also offers pianists Andre Watts, Garrick Ohlsson, Jean-Yves Thibaudet (for two weeks, covering Liszt and Gershwin works), Simone Dinnerstein (her BSO debut), and Lang Lang. The latter will perform Tchaikovsky's Piano Concerto No. 1 during the annual season-launching gala concert in September. "I'm so happy Lang Lang's coming," Alsop says, "since he made his debut with the BSO. We've worked together a few times."