"Es zittern die morschen Knochen" (The Rotten Bones Tremble) was a propaganda song of the Hitler Youth and the Nazi Party, written by Hitler Youth leader Hans Baumann. Its lyrics glorify the Nazi worldview and the anticipated triumph of the Third Reich. Despite its dark historical associations, the song remains a subject of study as a significant example of political music used for ideological indoctrination during the 1930s and 1940s in Germany.