Deutsche Gramophone is about to release a collection of songs composed by concentration camp jew. Remarkable how the jew had time to compose while being "exterminated".

http://www.deutschegrammophon.com/special/?ID=vonotter-theresienstadt

This is not the first time the Sweedish mezzo-soprano Anne Sofie von Otter has lent her talent to promoting mediocre jew composers. She has in the past produced entire CDs of “rediscovered” lieder composed by jew Kurt Weill, Eric Korngold, and Jacques Offenbach. These works needed to be “rediscovered” because when they were produced nobody liked them and the jew was not in the position to tell the goy how great these jew composer were. Now the jew has the power these “long ignored” “geniuses” are being “rediscovered”.

Questions:
So we are to believe that music composed by concentration camps member survived the WW2 but no documents related to the “holocaust” itself as survived?
Why didn’t jew use the paper and writing instruments to describe the homicidal gassings etc.
Why didn’t some jew artist draw pictures of the death camp?
If the jew was able to get access to writing instruments and paper why couldn’t they access to a camera and take some pictures?
Did the jew have access to a to a piano or violin while composing?