User blog comment:TenshiAkari12/IA TypeC - 1st Day's Verdict.../@comment-17388794-20140128073853/@comment-53539-20140128162010

Haku originally represented any badly constructed Miku song... And some people still see her as that so their defination of "Haku voice" is that.

Thats what I'm trying to say. You shouldn't use derivatives as a source of reference, because they don't have official voices. :-/