It took Beethoven four years to compose, and yet the Fourth Piano Concerto remains one of his most seamless, most poetic works. Hélène Grimaud returns to perform Beethoven, while Ludovic Morlot leads Divisions, a colorful new work by Sebastian Currier written in commemoration of World War I, plus Prokofiev’s triumphant Fifth Symphony. Composed in 1944, the symphony symbolized a turning point in the spirit of his people.