The poem highlights the lost and horrible state of German Jewish people who had to leave their homes and seek refuge in other countries due to the rise of Hitler and Nazism. The strict laws deprived them of their right to live, holocaust, concentration camps. Blues in the title refers to the musical genre that originated at the end of the 19th century and has a sad, melancholic tone, which is the tone of this poem. They sing of their agony and pain.