For me, the chorus of 'Home Lads Home' does it every time. Any song which is the last one sung at the last festival of the year and Rod Shearman's 'Here's to Friends'. In 'Unsung Heroes' I sing 'The Lament for the Oaks' (jon heslop)where mother earth laments the cutting down of her 300 year old oak trees for the navy and says farewell to them as her brothers, children and lovers and you can guarantee that there are tears from quite a few of the audience before I finish that song ~ and it's not just my bad singing! At one performance we had people sobbing before I had even started it as they knew the song. Perhaps we should have Cornwall Songwriters tissues available!!