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 thingsNEW!Nio
This is a track where Kagamine Rin’s earnest vocals hit you straight in the heart.
Created by Vocaloid producer Nio, it was released in December 2025.
Over a pop-leaning sound, it weaves together the fear that lurks behind everyday life and the strength to keep moving while carrying it.
Rather than erasing fear, its message—accepting it as a part of yourself that keeps you alive—resonates deeply.
Written specifically for Crypton’s official “Kagamine Rin & Len 18th Anniversary” project, this song is sure to gently nudge you forward when you’re feeling lost or tempted to stop.
Love-colored IlluminationNEW!Lunabitt.
This is a Christmas song that turns up the romance to the max! “Koi-iro Illumination,” produced by Lunabitt., was released in December 2025.
It’s a sparkling electronic track that conjures scenes of a white Christmas, with Miku’s autotuned vocals resonating pleasantly.
The lyrics, which convey the fun and thrills of love, are another highlight.
With this song, Christmas will feel like an even more special event!
Ray SongGuiano
An all-out, high-energy track that inspires everyone who listens.
Written by Vocaloid producer Guiano for the rhythm game “Project SEKAI COLORFUL STAGE! feat.
Hatsune Miku,” specifically for the unit Vivid BAD SQUAD, it was added to the game in June 2025.
With lyrics themed around light, the song carries a powerful message about believing in yourself and carving out your own path in the world.
Its EDM-driven, powerful beats and synths are another big draw.
Perfect for when you need a boost of positive energy!
Koma-neko Sisterswinter sitting room
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!
Materials for KokoroSatō Noko
An immersive UTAU track soaked in cool, pristine electronica.
Created by Vocaloid producer Noriko Sato, it was released in November 2025 as an entry for the anonymous submission event Colorless Transparent Festival 3.
The fusion of Yukiuta Yufu’s whispery vocals with a hard, beautiful sonic image evokes the feeling of traveling through unknown places.
The lyrics are also compelling, avoiding easy sentimentality and instead calmly tracing a record of the heart’s interior.
Sink into these waves of sound and let them wash over you.
Love Sky Recycling featuring Mixchu JuiceNomiko feat. Hatsune Miku
Koizora Recycling featuring Micchuk Juice is striking for its bursting electronic tones and lyrics that celebrate the joy of blending different personalities.
Included on Nomiko’s single released in March 2009, it was used as the ending theme for episode 12 of the anime Akikan!.
The technopop sound by TECHNOBOYS PULCRAFT GREEN-FUND is sure to lift listeners’ spirits! And the collaboration between a human and a virtual singer perfectly embodies the work’s worldview.
Just listening to it will fill you with energy!
Confession Rival DeclarationHONEY WORKS
It’s a bittersweet yet tender breakup song that wishes happiness for the one you love.
Released by HoneyWorks in 2014 as part of the “Confession Executive Committee ~Love Series~,” it’s told from the perspective of a protagonist carrying an unrequited love.
Set to a fast-paced, exhilarating band sound, the self-sacrificial kindness of saying “congratulations” to the person they like, even while knowing they’ll end up with someone else, really pierces the heart.
Despite its bright and catchy melody, by the time it ends, you’ll feel like you’re about to cry.
It’s a song that offers comfort to those who’ve experienced heartbreak or are struggling with a love that can’t come true.