The two organs of St-Sernin de Toulouse were built in 1889 by Aristide Cavaillé-Coll (main organ) and in 1876/1932 by Puget (choir organ). The main organ with 54 registers on three manuals and pedal is located on the west gallery and, as Cavaillé-Coll's mature late work, is one of the most famous organs in the world. Charles-Marie Widor dedicated his 10th organ symphony , the Symphonie romane, to her.
Delaunay built the first organ, the case of which still contains the main organ, in the 17th century. In 1845, the Daublaine-Callinet company built the organ from scratch with the participation of Charles Spackman Barker . The old case, previously only designed for an eight-footed work, was expanded on this occasion to provide enough space for the new organ with 47 registers on three manuals. When Aristide Cavaillé-Coll rebuilt the organ in 1888, he took over a considerable part of the pipework; the old barker machine of the Grand-Orgue was reused in the récit .
In the 1950s, Maurice Puget made minor changes to adapt the organ to the neoclassical ideal of sound of the time:
In the positive he replaced the Unda maris with a Fourniture III.
The clarinet des récit was reworked into a Cromorne and thus replaced the Basson-Hautbois in the positive. The free space in the récit was taken by a tierce .
Furthermore, the récit received a cymbal and a Nazard as a mixture .
He divided the carillon des positif into two registers: a sesquialtera II and a piccolo.
The Cornet of the Grand-Orgue received additional two new sets of pipes, one to 1 1 / 3 'and one to one'
Ministère de la Culture, Direction régionale des affaires culturelles de Midi-Pyrénées, Jean-Pierre Decavèle (ed.): Grand Orgue de la Basilique Saint-Sernin Toulouse . ADDOCC Midi-Pyrénées, Toulouse 1996, ISBN 2-906793-36-1 .