The Fonderie Cornille-Havard has acquired worldwide recognition over the years. Experts agree to praise the incomparable sound quality of its bells. They have five harmonics that go from the great bell (lower octave) to the fundamental (upper octave) through the minor third, the fifth, and the nominal. Cornille-Havard is also concerned with tuning the new bell with those who will frame it so that the whole can sound nice. Only the bells of the tocsins (alarms) are slightly discordant or sharp in order to be easily recognized by the population.