This concert of romantic works includes one of the most glorious examples of the genre: Schumann’s Piano Quintet, whose virtuosic piano writing and scale almost make it a concerto. The exhilarating first movement alternates optimism and yearning tenderness; the second is mournful and tumultuous. The joyful third contrasts a rush of ascending scales and dotted rhythms with tranquil and dancelike sections, and the fourth introduces a double fugue that builds to a triumphant finale. CCM members Deborah Sobol (piano), Joseph Genualdi and Jasmine Lin (violins), and Rami Solomonow (viola)–will be joined by guest cellist Marina Hoover. Also on the program is the original chamber version of Wagner’s poetic Siegfried Idyll, written for his second wife, Cosima. He assembled an orchestra in their house early on the morning of her 33rd birthday, waking her up with the serene, pastoral opening; the work takes some time to reach a full crescendo, long enough for her to realize she wasn’t dreaming. Like the Siegfried Idyll, Brahms’s Variations on