I need to know the name of the woman who sings 忘却の彼方[Oblivion] on the Duality album!

[Pour]

What a great song <3

[LineageRazor]

I don't have Duality, but assuming that the arrangement on the album is the same one from in-game, this Developer's Blog may interest you:

What's up, everybody! It's me, Soken! FINAL FANTASY XIV sound director, composer, arranger, sound engineer, dishwasher, whipping boy...

If you hadn't already noticed, I'm not that big of a guy.

It's not that big of a deal over here in Japan, but when I was in Las Vegas and London for the Fan Festivals, I felt helpless every time some musclebound Highlander, raised on steaks the size of monster truck tires, would snatch me up in their arms and flail me about like some ragdoll. It didn't help that those same musclebound Highlanders all loved the Primals concerts, resulting in countless more hours of ragdoll flailing coupled with high-five overdrives.

But enough about me, let's talk about Shiva. If you've already made it to the second phase of the Ahk Afah Amphitheatre battle with the Lady of Frost, you know the accompanying music takes an unexpected turn, the reason for that being that battle team specifically requested two completely different genres to represent the two different sides of Shiva herself. And speaking of two sides...if anyone has two sides it would have to be the vocalist I got to sing for the track. Normally, she's a polite, humble, little lass from the Localization team with a cute smile and an apology in her pocket for every time she insists she's not worthy. But beware all ye who might put a mic in her hand, for once unleashed, there is no stopping her inner demon...MWAHAHAHAHAHAHAHAHAHAHA!

While Soken doesn't name the vocalist, a quick internet search brought up the name Ayumi Murata, with Akane Ikeya on backup vocals. Not bad at all for someone who's apparently not a professional singer!

Edit: I learned also that this song was performed by a different singer at the 2014 Las Vegas fan fest. If that is the arrangement on the album, the singer is "Ashley" Ashelyn Summers.

[Jpec07]

I listened to this track for the first time the other night. Found myself tearing up when she got to "for the last time, I won't say 'goodbye.'"

It's such a wonderful rendition of the song. I really wish they'd found a way to include it in the game (I'd give anything for an Orchestrion Roll).

[Berethos]

I don't have Duality, but assuming that the arrangement on the album is the same one from in-game

It's a different arrangement - softer and more acoustic (and honestly my favorite track on the Duality album), which is also what makes it harder to tell if it's the same singer as any of the other performances.