Aristide Cavaillé-Coll was a renowned French organ builder born in 1811. He is celebrated for revolutionizing the design and construction of pipe organs during the 19th century. His innovative techniques and use of new materials allowed for greater expressiveness and versatility in organ music. Cavaillé-Coll's organs are characterized by their rich tonal quality and complex mechanical systems. He built instruments for many famous locations, including Notre-Dame Cathedral in Paris and the Sainte-Clotilde Basilica. His work significantly influenced the development of organ music and inspired future generations of organ builders and composers.