The histories which we have of the great tragedy give no idea of the general wretchedness, the squalid misery, which entered into every individual life in the region given up to the war. Where the armies camped the destruction was absolute.
You can't fake this music. You might be a great singer or a great musician but, in the need, that's got nothing to do with it. It's how you connect to the songs and to the history behind them.