 Let's take a moment now to remember Bernice Johnson Reagan. She may be best known as a singer and the founder of the a cappella group Sweet Honey in the Rock, but Reagan played an important role in the civil rights movement. She co-created the Freedom Singers, a group that sang at protests and marches. Reagan also made major contributions to black music scholarship throughout her life, and she died Tuesday at the age of 81. Crystal Klingenberg is curator of music in the Division of Culture and the Arts at the Smithsonian's National Museum of American History. Hi, Crystal.