Here's some info on the Xenoblade Chronicles II (aka Xenoblade Chronicles 2) soundtrack. She's on the soundtrack, but not a featured soloist.
https://vgmdb.net/album/7575065 Our Eternal Land
66 We Are the Chosen Ones
73 Ever Come to an End
74 Shadow of the Lowlands
https://www.xenoserieswiki.org/wiki/Xenoblade2_Original_SoundtrackSoloists:
Michael McGlynn "We Are the Chosen Ones"
Andrea Delaney (former Celtic Woman choir member) "Ever Come to an End"
Dónal Kearney "Shadow of the Lowlands"
Here are the tracks on YouTube:
Our Eternal Land:
https://www.youtube.com/watch?v=OcY53YUpf8QWe Are The Chosen Ones:
https://www.youtube.com/watch?v=oyy9iwQ7iD8Ever Come to an End:
https://www.youtube.com/watch?v=pDIvOzUt6bMShadow of the Lowlands:
https://www.youtube.com/watch?v=k9T9BmXqQGw