Vocaloid songs that start with 'O'
If you’ve come here, chances are you like Vocaloid songs.
It’s been a long time since Hatsune Miku’s debut in 2007, and countless masterpieces have continued to be born.
In the meantime, the Vocaloid scene has seeped so deeply into the times and culture that we even have the term “Vocaloid-native generation.”
Now then, what I’m introducing this time is a selection of Vocaloid tracks whose titles start with the letter “O.”
Be sure to read to the end and find a new favorite track!
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Vocaloid songs starting with “O” (121–130)
Onomatopoeia con artistparticles (te-ni-wo-ha)

A song with distinctly characteristic lyrics.
The word choice is amusing, almost like rakugo, and it never gets boring.
The melody and rhythm modulate so frequently that it would be difficult to sing without practice.
Conversely, if you can sing it firmly, the song’s inherent power will captivate listeners.
It was released in 2018.
The Schoolgirl Detective and the Eccentric Author — The Night Before the Antiquarian Mansion Murder Case —particles (te-ni-wo-ha)

This novel was written by Teniwoha, a Vocaloid producer also known for the hit song “Villain.” Based on the “Schoolgirl Detective Series,” a collection of works that developed from the 2012 track “The Antiquarian’s Manor Murder Case,” it was published in 2013.
It’s a mystery light novel in which high school student Hibari Hanamoto encounters cases that are solved by the writer Renma Kudo.
A manga adaptation was released in 2016.
Experience the skillful storytelling that will impress even seasoned mystery lovers for yourself!
a charmNakiso

Nakiso, a Vocaloid producer whose songs with a unique worldview—starting with “Dokuzu”—have been attracting attention from listeners.
His 2023 track “Omajinai” depicts a moment overflowing with dark emotions toward someone who has left him.
Videos that dramatize the lyrics with expressive visuals have been gaining popularity on TikTok.
The vocal performance by Hanakuma Chifuyu, whose voice feels strikingly human, also stands out as if speaking directly to the listener.
It’s a Vocaloid track that conveys a thrilling atmosphere, shifting from a fairy-tale-like sonic world to a weighty, powerful track.
The punchline is the same.Crying × Brain

This is a work released on Raison d’etre, a project channel where illustrator Nou creates music based on legendary creatures.
It was produced by Vocaloid producer Nakiso—known for major hits like “Dokuzu”—and released in April 2023.
The theme is Medusa, the monster who turns you to stone if you meet her gaze.
The arrangement, where the vocals and overall momentum steadily build and then drop all at once, feels quintessentially Nakiso.
The lyrics convey a sense of resignation—“no matter who comes, they’ll end up turned to stone anyway”—and the title, by extension, shows exceptional taste.
Oratorioscrew-type

This Vocaloid song carries a powerful message: let’s turn everything into fuel and move forward into the future.
It’s a track by the Vocaloid producer Nejishiki, known for popular works like “Freedom Lolita,” released in July 2023.
It also serves as the official demo song for the voice library MYK-IV, which was released the same month.
The arrangement, which layers rock and jazz, is striking—so you get a rush of style, intensity, and coolness all at once.
Be sure to turn up the volume and give it a listen!
Ghost GaoHarokeru

“Obake Gao” is a work by Harokeru, released in June 2024.
Submitted to Proseka NEXT, this piece is a fun, Halloween-themed number.
Hatsune Miku’s light, airy vocals and the poppy melody leave a strong impression.
The lyrics, which fuse cuteness with a spooky, eerie worldview, are also a highlight.
It’s perfect for livening up a Halloween party.
Singing it in cosplay would make it even more fun.
Vocaloid songs starting with “O” (131–140)
The wolf fell in love with Little Red Riding HoodHitoshizuku-P

The song progresses from both perspectives: the Wolf (Kagamine Len) and Little Red Riding Hood (Kagamine Rin).
If these two were to meet, the story’s ending would be… so they intentionally avoid each other.
It carries a slightly bittersweet feeling.
If sung by two women, the key might fit better.