As part of the 70th anniversary commemorations some survivors sing Hatikvah at Auschwitz today. (In front of press representatives whose presence seems to cheapen the event)
Long time readers may remember a post from several years ago in contained an audio file with kabbalat shabbos at one of the camps following liberation.
After davening, the congregation sang Hatikvah using lyrics that lost the test of time and have fallen out of use. Today the well known lyrics were used.
Survivors sing Hatikvah Auschwitz: http://youtu.be/chqD52D5VW0