Using Vocaloid songs in other programs than MMD

I wonder, are these songs considered under creative commons license or not? Is it safe to use them as soundtrack for Blender animations, for example, if it is non-commercial and credit is provided?

Because (from wikipedia…) :

Vocaloid (ボーカロイド, Bōkaroido) is a singing voice synthesizer software product.

…i guess any copyrighted song produced with it… still is copyrighted… and so any license fee has to be paid somehow to use it ??
And if not… then the artist may have soem rights on her/his performance … if not stated somwhow in any metadata ???

Okay. Just a wild guess, judging by how many videos with those songs are circulating on Youtube. Haven’t checked if all of them are MMD though.
Maybe I’m mixing it up with Hatsune Miku’s character design being released as creative commons

Like, there are definitely videos based on vocaloids rendered in Blender

Of course… and for any user created something and (like in this video) crediting the copyright owner and And Right belongs to… this might be okay…

But you ask about the license of the song itself…

Weirdly enough the song used is owned by someone else ???