User blog comment:MrMatthewz/So I need y'all to listen to this./@comment-53539-20141021083314

V1 had this extra data you could adjust which impacted how the phonetics sounded sometimes, they removed it from V2 and its never been in Vocaloid since. Topped up with some pro skills at good editing, the more vaguer phonetic sounding V1 engine, and you could pull off more miracles with language then V2 and V3 currently could do.

However, this is a little deceptive. If you set this to x2 speed with Youtubes data thing, you can hear that the reality is this isn't that good and overall, this sounds good only because of the slow-drawn out nature of the song. And I'm not talking about the way she sounds, the whole thing is kinda miss-leading. Meiko starts sounding like a trumpet at points and losses humanity (which often happens to V1's) - which is something that sped-up Act1 Kagamine's are also guilty of.

Reality was, V1 had some nifty things going for it despite being the LQest of the versions.