 The free Air Force Band Sunday concerts, featuring famous guest artists, are popular, as is the band's special Christmas gala show.In 1939, the DAR denied African-American singer Marian Anderson the opportunity to sing at the Hall, causing First Lady Eleanor Roosevelt to resign her membership in protest.Instead, Anderson performed (with the aid of Eleanor Roosevelt and her husband, President Franklin D. Roosevelt) a critically acclaimed open-air concert on Easter Sunday, April 9, 1939, on the steps of the Lincoln Memorial in Washington, D.C. She sang before a crowd of more than 75,000 people and a radio audience in the millions.