Talk:Controversy Concerns/@comment-107.161.199.230-20150718054301/@comment-53539-20150718134001

I found out about it via VO forums when someone linked to an example. It was known to exist before Stella, its just Stella was the thing that highlighted it. Planty himself mentioned it in a blog before the thing about Stella went down and how illegal it was. Which becomes utterly tragic when you consider he knew it was wrong before he did it but he still did it.

Other then its existence, to be fair I don't know much about it myself. XSY is often unpredictable and with XSY the more different the vocals the more stranger the results become often. So mixing two vocals with large contrasts with each other can produce a much LQ result then mixing any of the intended XSY vocals, in theory anyway.

XSY is one of those thing about the Vocaloid software that touch upon a lot of grey areas... For private use, however, its "okay" sorta. Just be aware of the risks with downloading illegal mods and the dangers they carry, etc, etc. I wouldn't look too deeply into it, as your not even suppose to put things onto youtube using it. It is illegal.

As for why its illegal, well firstly you're not allow to mod the software and secondly, the voices themselves, the Vocaloid don't always share the same terms of usage. Miku and IA are the classic pair who have slight differences of how you can use their image or vocal.