Carl Ruggles has been played on NTS in shows including 75 Years of Folkways Records, featured first on 22 October 2023. Songs played include Seeger: Andante for strings and Preludes.

Charles "Carl" Sprague Ruggles (March 11, 1876 – October 24, 1971) was an American composer of the American Five group. He wrote finely-crafted pieces using "dissonant counterpoint", a term coined by Charles Seeger to describe Ruggles' music. His method of atonal counterpoint was based on a non-serial technique of avoiding repeating a pitch class until a generally fixed number such as eight pitch classes intervened. He wrote painstakingly slowly so his output is quite small.

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