The rapturous Second Sextet for Strings—Brahms’s musical farewell to a lost love—opens a program of music by composers who defined their eras. Margaret Batjer and Desmond Hoebig team up with four Festival fellows in Brahms’s exhilarating tour de force. “Entrée de Polymnie” is a brief, yet profoundly beautiful selection from French Baroque composer Jean-Philippe Rameau’s final opera Les Boréades. World-renowned pianist and Mozart scholar Robert Levin returns as soloist in Mozart’s darkly brooding Piano Concerto No. 24, the composer’s most richly scored work for piano and orchestra. Festival Music Director Jeffrey Kahane conducts the Festival Orchestra in this dramatic program.