This excellent group, specializing in the French Baroque, turns its attention to Rameau in honor of the 250th anniversary of his death. Its program at Carnegie Hall's most intimate space, Weill Recital Hall, includes keyboard works and instrumental selections from the opera "Les Indes Galantes," played by Ryan Brown, a violinist and the ensemble's artistic director; Kenneth Slowik on the viol; and Olivier Baumont and Andrew Appel, both on the harpsichord.