The term 'Canal of Song' is a reference to the Erie Canal, a waterway in the United States that stretches from Albany, New York to Buffalo, New York. The canal was built in the early 19th century and was an important part of the development of the Great Lakes region. It was also known for its folk songs, which were sung by the laborers who worked on the canal. The Erie Canal is often referred to as the 'Canal of Song' due to its association with these folk songs.