5 Reasons Why Honeymoon Un Deux Trois Is The Viral Vocaloid Jazz Waltz That Refuses To Die

As of December 21, 2025, a decade-old Japanese Vocaloid song is experiencing a massive, unexpected resurgence, dominating music discussions across social media and streaming platforms. The track is "Honeymoon Un Deux Trois" (蜜月アン・ドゥ・トロワ, *Mitsugetsu Un Deux Trois*), a sophisticated jazz waltz originally composed by the producer DATEKEN featuring the Vocaloid character Kagamine Rin Append Warm. While the song has always been a beloved classic among dedicated Vocaloid fans since its 2013 release, its recent spike in popularity is a fascinating case study in how modern internet culture, specifically the rise of VTubers, can breathe new life into older content. This deep dive explores the enduring charm of "Honeymoon Un Deux Trois," the key elements that make it a masterpiece, and the specific event that catapulted it back into the global spotlight, securing its status as a timeless piece of digital music history. The song's blend of multilingual lyrics and a captivating melody has cemented its legacy, but its viral second life proves its universal appeal transcends time and language barriers.

The Original Masterpiece: DATEKEN, Kagamine Rin, and the Jazz Waltz Phenomenon

The foundation of the song's enduring success lies in its original composition and the unique Vocaloid it features. "Honeymoon Un Deux Trois" is not a typical J-Pop or Rock-influenced Vocaloid track; instead, it boldly embraces the sophisticated sound of a Jazz Waltz. This choice immediately set it apart in the scene of the early 2010s.

• Composer: DATEKEN (often stylized as DATEKEN)
• Vocaloid: Kagamine Rin Append Warm
• Original Release Date: February 15, 2013
• Genre: Jazz Waltz, Swing, Vocaloid
• Title Meaning: The Japanese title, 蜜月アン・ドゥ・トロワ (*Mitsugetsu Un Deux Trois*), directly translates to "Honeymoon One Two Three."
• Key Feature: The song is notable for its intricate blend of three languages: Japanese, English, and French, with the phrase "un, deux, trois" (one, two, three) being a central, rhythmic motif.

The use of Kagamine Rin Append Warm—a softer, more expressive voice bank for the Vocaloid Kagamine Rin—lends a delicate, almost whispered quality to the vocals, perfectly matching the song's romantic and intimate lyrical theme. This choice enhances the feeling of a private, cherished moment, a "honeymoon" captured in music.

1. The Secret Language of Love: Lyrical Themes and Multilingual Charm

The core appeal of "Honeymoon Un Deux Trois" is its sweet, yet subtly suggestive, narrative of a newly married couple's intimate getaway. The lyrics depict a playful, romantic scene, often referencing the act of kissing and dancing to a "sweetest song." The multilingual nature of the song is a stroke of genius, adding layers of international flair and mystery. The French phrase "un, deux, trois" (one, two, three) serves as both a count for a dance step—fitting the waltz rhythm—and a simple, universal expression of excitement or anticipation. For the global audience, the inclusion of English and French phrases makes the song instantly accessible, even for those who do not speak Japanese. This clever linguistic structure is a major reason why the song translates so well across different cultures and has inspired so many international covers, including full French and English translyrics.

2. The Viral Catalyst: Luca Kaneshiro and the VTuber Effect

The most significant factor in the song's recent surge in popularity is the cover released by Luca Kaneshiro, a prominent male VTuber affiliated with the popular agency NIJISANJI EN. Luca’s rendition, produced by Natsume Chiaki, introduced the 2013 classic to a massive, new generation of fans who are deeply engaged in the VTuber and anime communities. Luca Kaneshiro's powerful, charismatic vocal performance offered a fresh, male perspective on the romantic track, contrasting beautifully with Kagamine Rin's original soft tone. The cover quickly became a viral hit, achieving over one million views and generating significant discussion on platforms like YouTube and Reddit. This phenomenon highlights a crucial trend in modern music: older Vocaloid classics are being rediscovered and amplified by high-profile VTubers, effectively bridging the gap between two major facets of digital Japanese pop culture. The success of this cover alone generated a wave of new fan art, dance covers, and renewed interest in the original DATEKEN piece.

3. A Rhythm Game Favorite: The Project Sekai Connection

While not an official track in the massively popular rhythm game *Project Sekai: Colorful Stage! feat. Hatsune Miku* (known simply as *Project Sekai*), "Honeymoon Un Deux Trois" is a highly requested and frequently fan-covered song within that community. The game's focus on Vocaloid classics and modern hits makes it a key cultural barometer, and the consistent demand for this track speaks volumes about its enduring appeal. The song’s distinct Jazz Waltz rhythm and structure make it a perfect candidate for a challenging and unique rhythm game chart. Discussions and fan projects related to its inclusion in *Project Sekai* keep the song’s name in the cultural conversation, ensuring it remains relevant to the millions of players who engage with the Vocaloid universe daily. This constant fan engagement acts as a powerful, organic marketing engine for the decade-old song.

4. The Enduring Appeal of the Jazz Waltz in Vocaloid

The genre choice is a key to the song's longevity. In a music scene often dominated by high-energy electronic or rock tracks, the sophisticated, nostalgic sound of a Jazz Waltz provides a refreshing change of pace. The song's intricate piano work, smooth brass elements, and danceable 3/4 time signature create an atmosphere of elegance and timeless romance. This musical complexity is a hallmark of DATEKEN's work and has ensured that "Honeymoon Un Deux Trois" is not just a passing trend, but a piece of music that stands up to repeated listening. It appeals not only to Vocaloid enthusiasts but also to fans of anime, swing music, and classic jazz, giving it a much wider audience reach than many of its contemporaries.

5. The Legacy: Inspiring a Decade of Covers and Creativity

The true mark of a classic is its ability to inspire new art. Since its release, "Honeymoon Un Deux Trois" has been a favorite for cover artists, both human and digital. The song’s three-language structure and open-ended romantic theme allow for immense creative interpretation. From full English translyrics by creators like Nova Polaris to various human covers that showcase unique vocal styles, the song serves as a creative canvas. The recent explosion of the Luca Kaneshiro cover is the latest, but certainly not the last, chapter in this song’s long and celebrated history. It proves that a great melody, a unique vocal, and a universal theme of love can transcend the limitations of its original medium, finding new life and new fans with every passing year. "Honeymoon Un Deux Trois" is a testament to the enduring power of Vocaloid music and its surprising ability to go viral again and again.

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