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A compilation of Vocaloid songs with titles that start with “Ko”

You might sometimes sing songs or create playlists that start with a letter chosen from the Japanese syllabary.

When it comes to songs that start with “ko,” many titles like “kokoro” (heart) or “koi” (love) may come to mind.

In this article, we’ve curated a selection of Vocaloid songs with titles that begin with “ko.”

We’ll introduce everything from staple tracks to the latest releases, as well as songs that showcase unique ideas.

Many of these pieces carry a touch of melancholy, so why not listen with an ear for the emotional side of Vocaloid vocals?

A compilation of Vocaloid songs with titles starting with 'Ko' (1–10)

Scary thingsnio

Scary Things / Nio feat. Kagamine Rin
Scary thingsnio

While addressing the anxieties hidden in everyday life and doubts about oneself, this work ultimately portrays a forward-looking attitude of accepting them and moving on.

It’s a piece by Vocaloid producer Nio, released in December 2025.

It was written specifically for the “Kagamine Rin/Len 18th Anniversary” feature.

The gentle sound arrangement and Rin’s calm vocals are striking.

The blend of warmth and poignancy creates an atmosphere that I think suits the fresh-green season.

This is the Great Adventure Concierge!!gurihama T

[Hatsune Miku] This Is the Great Adventure Concierge!! / Grihama T
This is the Great Adventure Concierge!!gurihama T

How about an energetic, sparkling pop sound? It’s a work by Vocaloid producer Gurihama T, released in November 2023.

This bright cheer song guides listeners on a grand journey of dreams.

The lyrics are packed with a positive message: even if you fail, it’s okay to keep trying again and again.

Why not let this piece give you a boost and spend some smiling time with your mom?

Let’s go with this as it is.kei

Let's Go As We Are / Hatsune Miku & Megurine Luka
Let's go with this as it is.kei

This work by Vocaloid producer KEI—known for hits like “Hello, Worker”—will be released in February 2026.

It’s an original song written for Leo/need, a unit from the game “Project SEKAI COLORFUL STAGE! feat.

Hatsune Miku.” The band sound is colored by piano tones, and its warm mood alone makes your heart feel cozy.

The theme, which portrays the dignity of “keeping on even if it’s clumsy,” is deeply moving.

It’s a Vocaloid track that gives you the strength to face forward and keep walking!

Compilation of Vocaloid songs with titles starting with “Ko” (11–20)

Like this foreverMòwěi

Forever Like This / Matsuo feat. KAITO (Forever Like This / Matsubi feat. KAITO)
Like this foreverMòwěi

If you want to drown in a sweet, perilous illusion, don’t miss this track sensually sung by KAITO.

Composed by Vocaloid producer Matuo, it was released to mark KAITO’s 20th anniversary.

The stylish, piano-driven soundscape pairs exquisitely with the languid, cool vocal delivery, refusing to let the listener go.

The lyrics depict a slightly frightening yet beautiful world where, in their pursuit of eternity, two people end up binding each other—absolutely superb.

Put it on late at night, alone, and immerse yourself completely in the sea of sound.

Koma-neko Sistersfuyuzashiki

Koma-neko Sisters / Kagamine Rin
Koma-neko Sistersfuyuzashiki

This is a Japanese-style Vocaloid song that portrays the daily life of a cat living at a shrine and its Shinto priest.

Created by Fuyuzashiki, it was released in November 2025.

Sung by Kagamine Rin, it adorably depicts a devoted cat carrying tea and conveys a single-hearted desire to stay by the side of someone precious.

The lyrics are especially striking for the coexistence of a resolve to “let no one take this everyday life away” and the readiness to face the farewell that will one day come.

It’s a must-listen for anyone who cherishes the happiness of ordinary days and for cat lovers alike!

Beyond wordsAoya Natsuo

Unspeakable / Kasane Teto SV – Natsuo Aoya
Beyond wordsAoya Natsuo

This is a song that gently stays by your side when the feelings deep in your chest don’t quite turn into words—a soothing antidote to that frustration.

Created by Vocaloid producer Natsuo Aoya, it was released in February 2025 as an entry for the video posting event VocaColle Winter 2025.

The relaxed vocals of Kasane Teto SV and the comforting rhythm seem to wrap up the words you couldn’t bring yourself to say.

Listen to it during seasons of farewells and new departures, when your heart is swaying, and you might just feel a little lighter.

Punishment of HappinessLonePi

Kōfuku-kei – LonePi feat. Hatsune Miku
Punishment of HappinessLonePi

A number where poppiness and wistfulness intertwine like a sweet poison.

It’s a track by Vocaloid producer LonePi, released in January 2026.

The song was written specifically for the mobile game “Project SEKAI COLORFUL STAGE! feat.

Hatsune Miku.” True to its title, which pairs the opposing words “happiness” and “punishment,” its appeal lies in a worldview suffused with a shadowy, uneasy atmosphere.

The philosophically tinged lyrics tracing the fate of dependency are another highlight.

Be sure to give it a careful listen.