Looking at Frantisek Kupka's fanciful image I wonder if he played the piano or harbored some vivid memories of the sounds of a keyboard. So I began a mental list of the piano pieces I've attempted to play that were water music. Claude Debussy is the composer with the most entries with Gardens In The Rain, Reflections In Water, and The Engulfed Cathedral. Both Debussy and Maurice Ravel had their versions of Ondine, the mythical goddess as water nymph. Also, Ravel and Franz Lizst each composed a Jeu d'eau, with Lizst specifying that his was about the fountains of Villa d'Este in Tivoli. I have a soft spot for The Fountains Of The Acqua Paola by the short-lived American Charles Tomlinson Griffes (1884-1920).
Image: Frantisek Kupka - Piano Keys, 1905, Nardon Gallery, Prague.