What makes the song "Hallilujah" sad?

It reminds me of a camping trip with my friends. It's the... melody? I don't know.

This is the best version.

You do mean this one, right? Not Handel's messiah? and Not Paramore, I hope.

Anyways, it's about failed love, which is almost always very sad. It is a personal song that came from the original artist's (I can't remember who that is at the moment) heart, so it's filled with real emotions. not just how he thinks it would feel. The combination of heartfelt lyrice, tempo, and instrumental all work perfectly and compliment each other.

Real songs evoke real emotions.

This one is my favorite variation.