User blog comment:763492/List of non-child female Vocaloids with high-pitched cute voices/@comment-29714788-20160430061247/@comment-29714788-20160501032352

I meant to say that as a joke guys...

@763492 Vocaloids aren't restricted to singing in one range only. There are optimal ranges where the Vocaloid will have the best singing results but it's up to the producer if they want Miku to sing in Big Al's range or vice versa. Also, the only female child Vocaloid is Yuki. Rin and Nana's characters are 14, but they're voice acted and their voicers are adult women. It's the same case with Rana, but she doesn't have an official age (though she is assumed to be a child)