Songs that have a smooth, atmospheric tone / sound to them that makes them sound so much better. (in my opinion) It's hard to explain exactly how it sounds and why I like it so much, but finding songs that have this certain "feel" or "sound" to them is hard but when I do, it's amazing.
Examples of what I mean
U2 - With or Without YouDreams - The CranberriesEurythmis - Here Comes the Rain AgainGotye - Somebody That I Used To KnowWhen I listen to these, no matter the lyrics, it has a tone which makes me feel more soaked in the music and feel more emtional when listening. Emotional as in a more sympathetic, depressed (in a way that brings you closure) and etc
I'm weird but this is stuff I like