How many pipes doe the organ at Notre Dame de Paris have ?
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