I don't mind it at all and I think Sissel did a great job "vocalizing" in Titanic. It adds an ethereal feel which greatly enhances the mood of the film imo.
No, she didn't. The Irish group Claanad performed a song at the climax of that film, which Michael Mann susequently removed for his directors cut. Enya was at one time part of that group and I believe her sister still is, but I'm pretty sure she wasn't involved then. Also, I was referring to...
When James Cameron and James Horner couldn't convince Enya to participate in the Titanic score (she said then that "I don't do movies") they instead hired the Danish singer Sissel to sing the solo vocals on the score. The sountrack went on the become the best selling sountrack album ever and...