Carl Maria von Weber and Friederike Grün were both what nationality?
Friederike Grün Friederike Grün (14 June 1836- January 1917) was a German operatic soprano who had an active career during the latter half of the 19th century. Possessing a powerful voice with a wide vocal range, she sang a broad repertoire that encompassed Italian, French, and German opera. High points from her stage repertoire included the title heroine in Vincenzo Bellini's "Norma", Agathe in Carl Maria von Weber's "Der Freischütz", Leonore in "Fidelio", Rachel in Fromental Halévy's "La Juive", and Valentine in Giacomo Meyerbeer's "Les Huguenots". She is best remembered today for portraying several roles in the first complete presentation of Richard Wagner's "The Ring Cycle" at the very first Bayreuth Festival in 1876.
Bernhard Grzimek Bernhard Klemens Maria Grzimek (] ; 24 April 1909 – 13 March 1987) was a renowned German zoo director, zoologist, book author, editor, and animal conservationist in postwar West-Germany.