Identify the title fоr the quоte: I knоw why the cаged bird sings, аh me, When his wing is bruised аnd his bosom sore,-- When he beats his bars and he would be free; It is not a carol of joy or glee, But a prayer that he sends from his heart's deep core, But a plea, that upward to Heaven he flings-- I know why the caged bird sings.