I love Enya's music and would buy anything she released, but my emotions about her don't run any higher than they do for any of my other favorite pop musicians (like REM or Joni Mitchell). I understand that her music is not for every taste, and if someone expresses distaste for her, that's fine. And, frankly, critics have a point when they complain that all her albums sound alike: they do. In fact, on her first four albums, even the formatting of tracks is the same; the first song is the title track—typically a lush, slow instrumental—the second song is a poppier, more radio-friendly song and usually the single from the album. Later you'll find a song in Latin or Gaelic (or both), and what one of my old friends calls a "bippity-boppity" song which has a stronger beat than the rest. She has occasionally tried something different—as in "My! My! Time Flies!" on And Winter Came in which she practically rocks out—but the tried and true usually wins out, and with worldwide sales of over 75 million albums, who can blame her?
Though she gets tarred with the New Age brush, I think she's gone past that label, though I'm not sure what other existing genre would fit her (Wikipedia calls her an Irish singer and instrumentalist, which is both correct and unhelpful). New Age has the reputation of being tinkly ethereal music whose main job is to relax its listeners. Enya's music can certainly be relaxing, but it can be powerful and even a little sinister. If I can say one thing about her music with certainty, it's that the lyrics (by Roma Ryan, wife of Enya's producer Nicky Ryan) are unimportant. They tend to be vague meanderings about love and loss (and water) which is fine since the message here is really in the music—the rumbling basses, the crystal clear pianos, the almost tribal percussion, the bells tolling in the distance, and the heavenly choirs of overdubbed Enyas which back up her gentle vocal leads.
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Her new album, Dark Sky Island, will change no one's mind. There is one immediate difference: the title song is not the first song. But otherwise, the basic formula is the same: nebulous lyrics about love and loss ("I Could Never Say Goodbye"), a song in Latin ("Astra et Luna"), instrumentals, a couple of sets of lyrics in Loxian, and some experiments with rhythm ("Echoes in Rain," "Diamonds on the Water"—which contains what sounds like woodblock percussion that I found charming on the first listen, irritating on the third). And I'm not complaining. There is something about Enya's music that feels mysterious and profound, and, for me at least, its novelty has not worn off after all these years, partly because no one else is doing it and partly because she does it so well.