Harp XVIIIth Century Jean-henri Naderman From 1783.

Harp XVIIIth Century Jean-Henri Naderman from 1783.
Naderman moved to Paris in 1762. In the service of Queen Marie-Antoinette, he made and perfected the queen's harps when she arrived in France. He has two sons, François-Joseph (1781-1835) and Henri (1783-1841), harpists and professors at the Paris Conservatory of Music.
He opened a music store in rue d'Argenteuil in Paris in 1773 and then took over the business of the publisher Charles-Georges Boyer in 1796, rue de la Loi under the sign "À clef d'or". His wife, Barbe-Rose Courtois (1755-1839), succeeded him on his death, entrusting the manufacture of the instruments to his sons.
The Naderman harp HARP in tinted wood, with painted decoration of landscapes, music trophies and roses, and carved decorations of acanthus,  Signed in iron "Naderman Paris" Mechanism with seven single-movement pedals.

History of the Harp.
The invention of the single-action harp is attributed to the German organbuilder Hochbrücker (1699 - 1763). It was at the beginning of the 18th century that he developed the system of pedals on the harp, it can be single movement formerly Cousineau, Naderman, Chaillot, Renault, Louvet, Krupp or double movement Erard.
In both cases, reference is made to the mechanism connecting the pedals to the strings to modify their length and allow the playing of musical alterations, that is to say sharps and flats.
This improvement makes it possible to play scholarly music, in particular works for harpsichord.
The German harpist Gaiffre (1827-1809) introduced the new instrument to Paris.
The pedal harp, called the classical harp, is the one used in symphony orchestras and chamber music groups. It is the most sophisticated harp. There are 7 pedals which modify the 7 notes of the scale on all octaves.
Paris soon became the most important center for the manufacture of harps.
The single-movement harp was the model on which Marie-Antoinette and the Duchess of Guînes played, for whom Mozart composed his Concerto for flute and harp in 1778.
The chromatic harp was invented in 1894 by Gustave Lyon, director of the Pleyel firm .