sentences:  Additionally, the organ of the Holy Name Cathedral was built in Chicago, and in the Netherlands the organs of the Westerkerk and the Concertgebouw, and the St. John's Cathedral, were restored.As of 1998 Cees van Oostenbrugge has controlled the company.Another restoration was carried out of the Hans van Covelen organ, which is the oldest playable organ of the Netherlands, originally built in 1511.