Just for the heck of it I ran a bunch of my lyrics (as a single file) through a plagiarism detector. It found nothing! Fun.
Last night I was going through this summer's lyrics and found I used the word "estranged" twice.
Themes in my lyrics this summer were:
dust, rubble, ruins etc.
you don't really know me
crumbs and leftovers
lies and beliefs
passages, halls, tunnels
I'm sure a psychological profile could be written based on this. I thought it might be fun to go back through everything and see what was on my mind.