When I was at my paternal Grandfather's funeral I was doing a decent job of keeping it together, but once Amazing Grace was sung I couldn't keep it in anymore. I definitely understand you there.

Amazing Grace. It's been played at every funeral I've been to and I just can't separate it from the horrid sadness associated with losing a loved one, then being forced to sit in a room of similarly suffering people to absorb their sadness. 

Reddit, what song can stop you dead in your tracks regardless of what you're doing when you hear it?