Since being rebuilt in 1983 by the organ builder Gerhard Grenzing, the organ of the Church of Saint-Pierre des Chartreux has given Toulouse an archetypal example of French classical organ building, equally capable of expressing the music of French pre-classical (Titelouze, L. Couperin), classical (Nivers, F. Couperin, Grigny, Marchand, Du Mage, Clérambault) and post-classical (M. Corrette, Daquin, Balbastre) composers. It was always intended that the reconstruction should combine what remained of the organ built by Robert Delaunay in 1683 with the different elements added by the 18th Century builders Isnard, Cavaillé and Jean-Baptiste Micot. Micot was responsible for transferring the organ from the Jacobins Convent to the Church of Saint-Pierre des Chartreux in 1792. When the organ was being installed in the church, its substructure had to be lowered to fit it into the space available. In the 19th Century, several changes were made to adapt the instrument to the romantic tastes of the period. These were carried out first by the organ builder Frédéric Junck in 1853 and then by the Puget family in 1899-1900. In 1958, Maurice Puget attempted to reverse the alterations of his predecessors, but it was not until 1983 that the organ of les Chartreux recovered its identity as a French classical organ. Among the fifty-one stops, four manuals and one pedalboard of this organ can be found stops dating from Delaunay's time (born in 1618), testifying to its pre-classical French construction (flageolet 1', tiercelette, eight-foot plein jeu), certain stops from the 18th Century showing the influence of the classical era (16-foot plenum and echo organ) and others from the late 19th Century characteristic of a post-classical organ (second trumpet for the grand-orgue, positive trumpet, treble flute, oboe, flute 16' and bombard). New stops were added by Gerhard Grenzing to complete the set. The city of Toulouse and the organists who work here have been extremely fortunate in finding in a single organ the opportunity of playing such a broad selection of French organ music ranging from 1623 (Hymnes de Titelouze) to 1819 (Annuaire de l'organiste de Lasceux).