A common theme in the music of French composers at pre world war I was water.  Debussy wrote En bateau (On the Boat), Sirenes (Sirens), Reflets dans l’eau (Reflections in the Water), Voiles (Sails), and La Cathedrale engloutie (The Engulfed Cathedral).  Ravel wrote Jeux d’Eau (The Water Fountain), and Ondine. So striking a peculiarity of…