Ravel opera rarity (an armchair sings) injects pure fantasy, great fun into CSO French fest

Review: It isn’t every Chicago Symphony Orchestra concert that ends with the conductor leading a gaggle of children across the stage like the pied piper. But there he was, Esa-Pekka Salonen, smiling ear to ear, a little child’s hand in his, marching the Anima-Young Singers of Greater Chicago into view for their ovation after a deliciously witty performance of Ravel’s one-act opera “L’enfant et les sortilèges,” an evident if unexpected hit at the CSO’s “French Reveries and Passions” festival.