I agree there is not 1 bad song she has ever recorded. I love each and everyone especially with that Angelic voice.
I think the reason for that is that Enya is a relentless perfectionist. Her albums are heavily produced, and she will “get it right” before she even thinks about releasing a track. And even then she will go back and “revisit” a track, tweaking it and reshaping elements. I’ve seen her take a track, rework it, remix it and then re-release it multiple times. One example of this is “Oiche’ Chiun” a Gaelic version of “Silent Night”. I am aware of at least 3 different mixes of this same track.
Dittos