I agree that performers need to know their audience before singing songs which may offend. I used to sing both "The bloody Orangeman" and "The old Orange flute " in an attempt at balance. I don't think a bit of bile is always out of place, I like to hear songs of love and hate. I'm surprised at the comments about "The sash my father wore " as the song had versions to suit both orange & green audiences, and in my time in Ireland I never knew it to give offence. It has a good tune, and good tunes will always cross over religious and political divides, which is one of the great things about music.