Mainly songs that I learnt when I first started singing at Herga because you could get into the folk club free if you were a performer... but that accounts for some of the songs I still sing too. Where songs are accurate records of social conditions at the time the songs originated, I find it very annoying when the PC police try to suppress them because they don't comply with current PC criteria. But that's another thread...

Also songs on which I just sang harmony, and it was an effort to work out what the original tune was.

I remember hearing Martin Carthy saying at the English National Festival at Sutton Bonington several years ago that he'd stopped singing Fanny Blair, because he thought Higgins was guilty, and that Fanny had been abused and wasn't a perjuring little whore at all. That's not about political correctness, that's about the credibility of the song on its own terms.