Two traditional music singers who are well known in the Washington area will take the stage together this Saturday for a free concert at the Library of Congress.

Sponsored by the Library’s Music Division, the American Folklife Center and the Folklore Society of Greater Washington, the concert will feature Hazel Dickens, a local bluegrass and folk musician, and Helen Schneyer, who was a fixture on the Washington folk music scene for several decades.

Dickens was well known in the 1960s when she and Alice Gerrard formed “Hazel and Alice.” Her songs were featured in the award-winning film “Harlin County, U.S.A.,” and in 2001 she was awarded the National Heritage Fellowship from the National Endowment for the Arts for her contributions to traditional music in America.

Schneyer, who has been a regular guest on National Public Radio’s “A Prairie Home Companion,” was active in the Washington folk scene for more than 25 years before moving to Vermont, where she continues her folk concert schedule. She has recorded three albums and has a new release in the works.

Saturday’s concert will take place at 2 p.m. in the Coolidge Auditorium of the Library’s Thomas Jefferson Building. For more information, call (202) 707-5510.

— John McArdle