Aristide Cavaillé-Coll intervened later in 1881 for minor works and in 1921 his successor, Charles Mutin, damage due to shrapnel, as shells had struck the square in front of the cathedral during
World War I. In the 1930s, famous organist
Marcel Dupré from Saint-Sulpice in Paris supervised a transmission electrification project that organ builder Roethinger from
Strasbourg was supposed to carry out. This project was fortunately stopped just because of
World War II. It is thought that the work would have irrevocably modified the specification and the sound; it would have destroyed the whole action and console. Finally, in 1965, a complete restoration was urgently needed, and organ builder Hærpfer-Erman was designated. The restoration was supervised by famous organist
Gaston Litaize and transformed the instrument's specification according to the
néo-classique ideas that were in vogue after World War II. The wind system, action, console and wind chests were mostly kept unspoilt, but the stop specifications were modified and
pipes were re-voiced. Some characteristic stops from the romantic organ's period such as harmonic stops, several viola da gamba, and several 16’ stops were replaced by smaller ones such as mixtures and mutation stops, corresponding to the classical French organ style. As was customary after World War II, materials used were of poor quality, especially regarding the organ's historical content. On the Positif; the Gambe 8, Flûte Harmonique 8 and Dulciane 4 were removed; the Plein-Jeu VII was broken up to form a Fourniture IV, Nasard 2 2/3, Larigot 1 1/3 and a new Tierce 1 3/5 rank. On the Grand-Orgue; the Gambe 16, Flûte Conique 16, Gambe 8, Flautone 8 and Viole 4 were replaced by a Tierce 3 1/5, Dessus de Septième 1 1/7, and the Quinte 2 2/3 and Doublette 2 from the Bombarde. On the Bombarde; the Plein-Jeu IX was broken up into a Fourniture V and Cymbale IV, the Basson 16 was removed and the Quinte 2 2/3 and Doublette 2 were moved to the Grand-Orgue, and their places were taken by Principals 8, 4 and 2. On the Récit; the Flûte Harmonique 8 was removed and replaced by a Principal 8, and a Cornet V and Plein-Jeu IV were added. On the Pédale; the only change was the replacement of the Violoncello 8 by a Fourniture IV. == The organ today ==