What German composer wrote a letter in 1770 addressing Lucrezia Aguiari's ability to perform in C sporano acuto?
Lucrezia Aguiari Lucrezia Aguiari (sometimes spelled Agujari) (Ferrara 1743/1746 – Parma 18 May 1783) was an Italian coloratura soprano. She possessed an unusually agile voice with a large vocal range that spanned slightly more than three and a half octaves; faculties that enabled her to perform the most difficult passage work. In a letter dated 24 March 1770 Leopold Mozart wrote of hearing her perform a C an octave above high C at the Ducal opera of Parma, "I could not believe that she was able to reach C soprano acuto, but my ears convinced me." Aldous Huxley also mentioned this event in his novel, "Brave New World", (misspelt as 'Ajugari').
Karl Christian Agthe Karl Christian Agthe (16 June 1762 – 27 November 1797) was a German organist and composer.