How does the description of the Easter Sunday event in "Marian Anderson Sings" differ from the description of the same event in the biography "Marian Anderson: Legendary Singer"?

"Marian Anderson Sings" lists the songs that Marian Anderson performed, but "Marian Anderson: Legendary Singer" does not include this information.

"Marian Anderson Sings" describes Mrs. Roosevelt's major role in arranging the event, and "Marian Anderson: Legendary Singer" states that Mrs. Roosevelt was not very involved.

"Marian Anderson Sings" includes dialogue while "Marian Anderson: Legendary Singer" only includes description.

"Marian Anderson Sings" includes the number of attendees while "Marian Anderson: Legendary Singer" does not address this detail.