A memorial to the victims at Auschwitz, Dies Irae allows the singers and players to improvise according to their talents and abilities. The chorus recites words, rather than singing them, and the instruments are the framework for the rhythm and pitch. It was first performed on the grounds of Auschwitz in 1967.
http://www.youtube.com/watch?v=w_jvgdAFJlM (Lamentatio 1/2)
http://www.youtube.com/watch?v=7pDqsF68Zgo (Lamentatio 2/2)
http://www.youtube.com/watch?v=67Sn_r9_tWA (Apocalypsis 1/2)
http://www.youtube.com/watch?v=cL-bd1N9KpM (Apocalypsis 2/3)
http://www.youtube.com/watch?v=Xgxmysc0sh0 (Apotheosis)
מוזיק אין חורבן | Music in the Holocaust 