The Challenger disaster tape is often too tough to handle for me. I was at the convention that it was made at. The con happened just a few months after the disaster, and the musicians had time to put their emotions to words. It is hard to come by, the publisher went out of business, i think. The biggest problem for the singers was to get some emotion in their voices with out being overcome with it. Some did manage that balance perfectly.I will try to get some of the songs mentioned.
Eric Bogel and Stan Rogers I know and they do fit this catagory.
There is a song called Cranes over Hiroshima that I have trouble singing.
As a parent, there are more songs that shut down my voice then there was 8 years ago.