The Klage is appended to most manuscripts of the Nibelungenlied and tells of the aftermath of the apocalyptic battle at the end of the Nibelungenlied. The survivors Dietrich, Hildebrand, Attila and the Burgundians left in Worms discuss the questions of guilt, lament the fallen and bury the dead.
The poem is thought to date from the around the years 1210-30 and can be divided into four sections. The first is a summery of events in the Nibelunenlied and who is to be held responsible for the slaughter. Kriemhild is absolved of all responsibility, her revenge is justified because of her true loyalty to her first husband, Siegfried. The second part cover Etzel's laments on the discovery of the dead and their burial. The third section covers the minstrel Swimmells journey to the lands of Rudigar and Worms to spread the news of events in Hunland. On his arrival in Worms, Ute dies of grief and Brunhild crowns her son king of Worms. In the final section of the poem Dietrich, his wife and Hildebrand prepare to leave Etzel's court and head back to retake Bern. It next describes how Bishop Pilgrim as the story of the fall of the Fall of the Burgundians written down in Latin by his scribe, Master Konrad. The poem ends with the statement that no one knows what happened to Etzel after the departure of the Amelungs.
Winder McConnell gives a very good introduction to this obscure poem, the Middle High German text and a great English translation of the poem.