Delighted that this one was so easy, as I have to catch a very early plane tomorrow morning to Palermo and have many other things to do before leaving. For those who are still puzzled by the title, take a hint from crosswhit99. This theme was used in a Listener puzzle as recently as 2009, and in 1987 Hand in Glove essayed something akin, in which the lights had to be entered doubly thematically. A variant of the thematic method of reading the clues (sufficiently signposted by the preamble, I think) was first used, I believe, by Salamanca in the NS. As to "ben trovato" it is defined in the OED as "Of a story, etc.: appropriate; happily invented if untrue". It comes from the old Italian phrase "Se non è vero, è molto ben trovato", i.e. "Even if it's not true, it is a happy invention" (literally "well found"). You will find it, for example, in Humphry Clinker (1771): "Your fable of the monkey and the pig, is what the Italians call ben trovata [sic]." [For a hint about "Taste and Fancy" see my posting at that thread.]