What’s the last song you re-listened to obsessively?

I’ve been stuck on this old folk tune from a busker in Lisbon—just two chords, but something about the way the wind caught the singer’s voice mid-verse… I played it over and over on my phone while waiting for the next corner. Not because it’s good, exactly, but because it felt like a moment that didn’t need to be fixed. What’s yours? The one that just won’t let go?