As a songwriter, I guess what is true for me is...
I write according to what I experience in life and what I observe others go through also, least from an observer's point of view. The lyrics to my songs will most often reflect a story or event or growth phase, a relationship and so on and the most creative part is trying to express the feelings and emotions that went with that.
Most often it is the sounds and mood of the music that helps portray that in fullness, not just mere poetry.
So maybe as we all experience similar challenges in life or seem to lead similar paths, we automatically pick up on something we recognise in a song, whether it be the mood or the story.
