holocaustmusic.ort.org

VBmKp TIL composer Rudolph Karel composed operas by writing on toilet paper while imprisoned during WWII
WkRB4 TIL the beginning of Beethoven's Fifth Symphony (dit-dit-dit-dah) is morse code for the letter V. Representing victory, this was an acknowledged symbol of the war effort, made by Winston Churchill forming a 'V' with the first and second fingers of his raised right hand.
QWxk TIL that in Auschwitz, the SS forced an orchestra to play for Jews that had been selected for gassing. The musicians also had among the highest suicide rates of anyone in the camp.