Founded in 1970, Rounder specializes in blues, blues-rock, string band, bluegrass, folk, soul, soca, Cajun, and Celtic music.
The Library of Congress joined Rounder in a project to reissue American folk music from the legendary Library of Congress series Folk Music of the United States. The original series, launched in 1942, was the first documentary anthology of American folk music featuring field recordings drawn from the
Library's Archive of Folk Culture.