What prayer were the people singing at Auschwitz in the book night?

In the book "Night" by Elie Wiesel, the people at Auschwitz were singing the "Kaddish," a Jewish prayer for the dead, as a way to honor and mourn those who had been lost. This moment highlights the profound despair and loss of faith experienced by the prisoners, as they grAppled with the horrors of their situation. The recitation of the Kaddish in such a dire context underscores the deep connection to their heritage and the struggle to maintain their identity amidst unimaginable suffering.