A very fun and cute Hatsune Miku song/PV I found. A youtube link as well as the nico mirror is posted below.
Just something about the song is super fun. I can't understand it, but nonetheless, enjoy.
It features Hatsune Miku (obviously), Akita Neru (a variant of miku), and Kasane Teto (who isn't technically a Vocaloid, but a program called UTAU).
I wish I could search up more on UTAU, but every time I put UTAU in google, I get Utau Hoshina (Shugo Chara), and when I search up "kasane teto UTAU", I find this video XD
EDIT: I found UTAU!
I can't read it, but I'm sure the link is relevant.