This excellent pianist, in residence at Caramoor this summer, offers a solo program on Friday of water-themed pieces, with works by Brahms, Debussy, Janacek, Liszt, Ravel and Takemitsu. On Sunday, Ms. Grimaud joins the Orchestra of St. Luke's and Pablo Heras-Casado, its dynamic young conductor, for Brahms's Piano Concerto No. 1. The program also features Tchaikovsky's Symphony No. 1.