Friedrich Melchior, Baron von Grimm (26 September 172319 December 1807) was a German-born French-language journalist, art critic, diplomat and contributor to the ''Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers''. In 1765 Grimm wrote ''Poème lyrique'', an influential article for the Encyclopédie on lyric and opera librettos. Like Christoph Willibald Gluck and Ranieri de' Calzabigi, Grimm became interested in opera reform. According to , a German literary theorist, "sooner or later a book entitled ''The Aesthetic Ideas of Grimm'' will have to be written."
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