* BreakawayPopHit: While "Only Time" got released as a single alongside ''A Day Without Rain'' in late 2000, in America it was targeted toward Adult Contemporary radio. In June of 2001 it got a broader release tied into it being on the soundtrack of ''Film/SweetNovember''. Airplay picked up in the wake of [[UsefulNotes/TheWarOnTerror the September 11 terrorist attacks]] and it became a Top 10 hit in the US, while ''Sweet November'' was a BoxOfficeBomb that was long-forgotten at that point.
* KeepCirculatingTheTapes:
** The original 1986 ''Enya'' version of ''The Celts'' on the BBC label is very hard to find; it was replaced by a virtually identical release on Creator/AtlanticRecords, and later her main label WEA reissued it in a remixed form, with one track replaced with a later-recorded (longer) version of the same composition, and completely different artwork (replacing the off-piste images described in EarlyInstallmentWeirdness, with more on-brand imagery). The music video for "I Want Tomorrow" was never seen again, either, and omitted from Enya music video collections ... at least not until BBC Video released ''The Celts'' on DVD in the mid-2000s (an episode of the series included the music video).
** Due to licensing issues with the film clips included, Enya's music video for "Book of Days", released to promote the film ''Film/FarAndAway'', is omitted from most official VHS and DVD releases of her music videos. Some issues use a TV performance instead. Similarly, the video for "Exile", which also tied in with another movie, ''Film/LAStory'', is also scarce.
** Enya released a number of tracks that have, to date, appeared only on CD singles, some of which have been out of print for three decades.
** One early-1990s track, "Isobella", was initially only released in Asia. In the (very) early days of file sharing, pre-World Wide Web, many fans circulated copies of the song through newsgroups.
* ProductionPosse: Enya is not quite a group, but lyricist Roma Ryan and producer Nicky Ryan are ever-present collaborators. It has been stated multiple times that "Enya" as an entity, consists of these three people. Indeed, as of 2018 Enya has yet to release a single recording that has not involved at least one of the Ryans, and that includes her time with Clannad, too.
* PromotedFanboy: Judging from the name of one track from her album ''Shepherd Moons'', "Lothlorien", Enya (or Roma Ryan, or both) is a fan of ''Literature/TheLordOfTheRings''. Fast forward to 2001, when she was asked to produce music for the Creator/PeterJackson films, with the result being two songs, "May It Be" (including lyrics in Quenya) and "Aniron" (with lyrics in Sindarin).
* ReclusiveArtist: While she has made a few semi-live singing appearances, and gives the occasional interview, Enya prefers to stay out of the spotlight, and very rarely appears in public. Part of this can possibly be attributed to the fact that she's had stalkers in the past, some of whom have broken into her home.
* ReferencedBy: One of the most important antagonists from ''Manga/JojosBizarreAdventureStardustCrusaders'' [[spoiler:and revealed in ''[[Manga/JojosBizarreAdventureDiamondIsUnbreakable Diamond is Unbreakable]]'' to be a GreaterScopeVillain]] is named Enya the Hag, after the artist herself.
* WhatCouldHaveBeen: Creator/JamesCameron wanted her to be the composer for ''Film/{{Titanic 1997}}'' and in fact reportedly used many of her recordings as temp music. Enya declined the offer, so Cameron instead commissioned Music/JamesHorner to write a score [[InTheStyleOf in her style]]. (Compare the anthemic music as Titanic leaves port with Enya's "Book of Days", for example.)
!!Other
* By WordOfGod, the backstory behind "Evening Falls" is that Enya and Roma were inspired by the old GhostStory of the woman who for years had dreams wherein she found herself in an old country house she'd never seen before, eventually found the house for real, only to have the owners stare at her in shock before admitting that she had been "haunting" it for all that time.
* The title for "Cursum Perficio" came from a documentary on Creator/MarilynMonroe, which noted that at the last home the actress lived in, she had carved the phrase on the front doorstep; it translates generally to "my/your journey ends here". For fairly obvious reasons, this struck Enya strongly, "haunting me for weeks" until she finally used them in a song.
* The majority of the pieces from her first album, ''Enya'', were written as the soundtrack for the 1987 BBC documentary ''The Celts''[[note]]The exceptions are "March of the Celts", "Portrait", and the two-parter "To Go Beyond"[[/note]], hence the changed title for the 1992 re-issue. Originally different artists were intended to score each episode of the documentary, but upon hearing the piece Enya submitted (the coincidentally-named and previously recorded "March of the Celts"), the director of the series, David Richardson, asked her to compose the whole thing. The music video for the opening track, "The Celts" (which was also the documentary's title theme) was not filmed until the album's re-release, however.