Louis Diémer
French composer (1843–1919)

Louis Joseph Diémer (14 February 1843 – 21 December 1919) was a French pianist and composer. He was the founder of the Société des Instruments Anciens in the 1890s, and also gave recitals on the harpsichord. His output as a composer was extensive, including a piano concerto and a quantity of salon pieces.
Life
Diémer was born and died in Paris. He studied at the Paris Conservatoire, where his teachers included Ambroise Thomas for composition, Antoine Marmontel for piano, and François Benoist for organ. From the age of twelve, he won several first prizes (Premiers Prix) at the Conservatoire, in piano, harmony and accompaniment, counterpoint and fugue, and solfège, and a second prix in organ.
He quickly built a reputation as a virtuoso and toured with, among others, the violinists Delphin Alard and Pablo de Sarasate.
In 1888, Diémer succeeded Marmontel as professor of piano at the Paris Conservatory. He taught, among others, Robert Casadesus, Alfredo Casella, Marcel Ciampi, Alfred Cortot, José Cubiles, Lazare Lévy, Robert Lortat, Yves Nat, and Édouard Risler. He was also instrumental in promoting the use of historical instruments, giving a series of harpsichord performances as part of the 1889 Universal Exhibition and contributing to the founding of the Société des Instruments Anciens.
“Louis Diémer” enters the record as french composer (1843–1919). Crown Archives preserves that source wording while asking what Louis, Diémer and French can confirm, complicate or overturn.
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Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Apr 27, 2026. The linked authority identifier is Q1349196. VIAF identifies the subject as 32262740. The Library of Congress control number is no88000875. 3 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1843, 1919, 1888 and 1889.
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This entry incorporates text from “Louis Diémer” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.