Question: How many pipes doe the organ at Notre Dame de Paris have?
About the article "Notre Dame de Paris", section "Organ".

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With 8,000 pipes, the organ is reputed to be the largest pipe organ in France, surpassing the organs of Saint Sulpice and Notre Dame de Paris.
The organ originally constructed by P.-A.
Ducroquet was powerful enough for the premiere of Hector Berlioz' titanic "Te Deum" to be performed at St-Eustache in 1855.
It was later modified under the direction of Joseph Bonnet.
The present instrument was designed under the direction of Titular Organist Jean Guillou and dates from 1989 and was built by the Dutch firm of Van den Heuvel retaining a few ranks of pipes from the former organ.  
Though several organs were installed in the cathedral over time, the earliest ones were inadequate for the building.
The first noteworthy organ was finished in the 18th century by the noted builder François-Henri Clicquot.
Some of Clicquot's original pipework in the pedal division continues to sound from the organ today.
The organ was almost completely rebuilt and expanded in the 19th century by Aristide Cavaillé-Coll.
The position of titular organist ("head" or "chief" organist) at Notre-Dame is considered one of the most prestigious organist posts in France, along with the post of titular organist of Saint Sulpice in Paris, Cavaillé-Coll's largest instrument.
The organ has 7,374 pipes, with ca 900 classified as historical.
It has 110 real stops, five 56-key manuals and a 32-key pedalboard.
In December 1992, a two-year restoration of the organ was completed that fully computerized the organ under three LANs (Local Area Networks).
The restoration also included a number of additions, notably two further horizontal reed stops "en chamade" in the Cavaille-Coll style.
The Notre-Dame organ is therefore unique in France in having five fully independent reed stops "en chamade".
Notre-Dame-d'Auteuil is a church on the Auteuil hill in the 16e arrondissement de Paris. 
Bish has made over thirty recordings on many of the great organs of the world including the celebrated Müller organ of the Grote of St. Bavokerk in Haarlem, Netherlands, Canterbury Cathedral, and Notre Dame Cathedral in Paris.
She is the first American woman to record at the organ of Freiburg Cathedral in Freiburg, Germany.
Her recordings include music for organ and orchestra, brass and organ, cello and organ, most of the great organ masterpieces, original compositions and hymn arrangements.
List of recordings  "Artistry of Diane Bish" (1978)  "Christmas Festival" (1970)  "Favorites from Freiburg Cathedral"  "Glorious pipes" (1990)  "The Glory of the Organ" (1980)  "Great European Organs" (1990), featuring organs of Austria, France, Germany, and the Netherlands  "Hymns on Coral Ridge Organ"  "The Joy of Christmas" (1980), accompanying the Diane Bish Chorale at organ   "The Joy of Music presents Hymns and Classics" (1990)  "Morning Has Broken" (1989)  "Pipes and More Pipes" (1978), organ and bagpipes  "Praise to the Lord" (1985)  "The Passion Symphony" (1979)   "Sixty-six hundred voices of praises  
Maîtrise Notre Dame de Paris is a noted pre-college music school situated in Paris, France.
Its origins can be dated to the 12th century, and are associated with the rise of the cathedral of Notre Dame.
Currently, the school is responsible for accommodating choruses and artists worldwide, forging artistic partnerships in France and abroad, and making its presence felt in the world of television and the music industry.
Choir School of Notre Dame - Music at Notre-Dame XXIe From the earliest times, music has been an integral part of the life of Notre Dame Cathedral in Paris.
While the pointed arches of the new gothic style rose up to the heavens to form the chancel, the new Notre Dame Choir School, with its magnificent polyphony, was born.
The voices of the choristers responded in virtuosity to that of the builders.
Since that time, the musical tradition at Notre Dame has been upheld to the highest degree and each generation in turn, has added a stone to the prestigious edifice, which is that of the Cathedral’s musical history.
(c)NDPPerfectly aware of the centuries’ old inheritance, of the influence of its activities both at home and abroad, and the high quality of musical education provided by the Maîtrise Notre Dame de Paris, the State, the City of Paris and the Parisian Diocesan Association decided together in 1991 to found the association of Sacred music at Notre Dame de Paris.
Responsible for the coordination at both administrative and artistic levels of all musical activities in the Cathedral, Musique Sacrée at Notre Dame de Paris has, first and foremost, the task of teaching music, training singers, organizing the musical accompaniment of the liturgy in the Cathedral, proposing concerts and recitals and of carrying out research into the rich musical inheritance of Notre Dame.
It also plays an important role in the creation of new musical works and in their circulation.
Important vocal and instrumental arrangements have been put in place to facilitate all of these projects.
The first and central element is the Choir School of Notre Dame (Maîtrise) composed of divers elements (Children’s Choir, Young Ensemble, Adult Choir of those undergoing professional training and the Gregorian Ensemble).
The great organ, the choir organ and their titular organists are also most important protagonists.
The [http://www.musique-sacree-notredamedeparis.fr/spip.php?article62] concert season, organ recitals on Sunday afternoons, the performance given, each year, of about fifty choirs from all over the world, as well as the presence, each day of those musicians attached to Notre Dame, show a high degree of musical excellence in keeping with the exceptional vocation of this unique place