Board Thread:General Discussion/@comment-151.56.121.14-20140807162718/@comment-32500188-20140807183901

I also don't hear it, even after hearing her singing. While Yuki Kaida does have a boyish tone to her voice, I think her voice has less weight to it compared to Iroha's. (...meaning it sounds like she's singing more from the throat, whearas Iroha sounds like her samples are that of someone singing from the chest).

That, and the way I've been seeing it ever since coming across the issue with every other Vocaloid that shares this: If the company/voice provider has opted out of revealing that fact for themselves, the answer to whatever guesses are made on who voices who 100% of the time is no. (At least until the day they change their minds...) It's cool to find similarities, but a lot of speculation can lead to some confusion and frustration at times, especially when there's no chance the company will reveal that info. ;-)