The DSO is the only professional symphony orchestra in the State of Delaware. Alfred I. du Pont formed the Tankopanicum Orchestra in the 1880s with employees, family members and others in the community, and was more of a band. The group disbanded because of Mr. du Pont’s progressing deafness. It was replaced by the Wilmington Orchestra in 1906, an ensemble that performed symphonic repertoire. That group changed names on several occasions, becoming the Delaware Symphony Orchestra in 1971. The DSO considers its “founding” to have been in 1906.