As the title says....which song still haunts you emotionally? And why? A (freely accessible) link might greatly bring your point across.
Mine would be: (Typhoon - "Empiricist") https://www.youtube.com/watch?v=9E328pIZWFM
The lyrics go deep and it just touches me. No otherwise special attachment.
Red Hot Chili Peppers - By the Way
It’s not intrinsically emotionally gripping, but my dad loved the heck out of that album and it evokes memories of him singing along and dancing to it.
For me, it’s a song about missing him.