To accompany the Chrysler Museum’s major exhibit of works by Henri de Toulouse-Lautrec, the Virginia Symphony Orchestra brings a concert of turn-of-the-century French works that dance and dazzle in colorful arrays. The music of orchestral favorite Claude Debussy in both his Prelude to the Afternoon of a Faun and Nocturnes bookend Camille Saint-Saëns’ second piano concerto performed by the graceful Alon Goldstein. The program concludes with Albert Roussel’s Bacchus et Ariane Suite No. 2. Like the Parisian dancing girls of Toulouse-Lautrec’s famous images, Roussel’s ballet conceals the mischievous Bacchus behind a veil of enchantment.