Musical trends come and go, but for the past 15 years, Enya's popularity has only grown more widespread.

Musical trends come and go, but for the past 15 years, Enya's popularity has only grown more widespread. Pigeon-holed early in her career for her music's more overt new-age leanings, the Irish vocalist persevered and has rung up sales in excess of 60 million albums worldwide since her 1987 debut, The Celts. That release is the starting point for Only Time—The Collection, a four-disc, 51-track career retrospective packed with favorites and some hard-to-find material. Any number of these songs will be familiar to even casual listeners, from the spartan instrumental "Watermark," the haunting "On Your Shore," and more upbeat fare such as "Book of Days" (the latter rerecorded with new lyrics for the film Far and Away) and "Storms of Africa." Indeed, there are very few, if any, of Enya's best recordings absent here ("Orinoco Flow" starts disc two). A handful of obscurities sweeten the pot, including "Oíche Chiúin (Silent Night)" from a BBC Christmas special and the Japan-only "Isobella." The set closes with the video of "Oíche Chiúin." Only Time is a bit comprehensive for beginners, but is the ultimate place to turn for those with an unquenchable Enya habit.—JC