Water Spirits. Ondine was a malicious water nymph with a penchant for luring men to a watery grave. Arethusa had no such powers and only escaped from unwanted advances by being transformed into a fountain. Penny Gore finds out how these colourful stories have been interpreted by composers as diverse as Szymanowski, Britten, Debussy and Reinecke, as well as Ravel - whose Ondine is one of the peaks of the piano repertoire. Producer Nigel Wilkinson Repeated tomorrow 4pm