Who composed RondeauX of RagnaroQ?

RondeauX of RagnaroQ was composed by Morrigan (Tadahiro Tsuchiya), a composer active in both doujin and commercial rhythm game scenes who has contributed to CHUNITHM, ONGEKI, REFLEC BEAT, and the BEMANI SYMPHONY ORIGINAL SOUNDTRACK.

What is the story behind RondeauX of RagnaroQ?

The song tells a mythic story about Aluos and Celepris, deities governing day and night who normally never meet. Summoned by Lucifer, they temporarily unite for the sake of a young girl's tears, setting aside their eternal conflict.

How do you unlock RondeauX of RagnaroQ in maimai DX?

In BUDDiES PLUS, the song was unlockable through Heaven Area 7 (天界ちほー7) by reaching a total distance of 850 km. From PRiSM PLUS onward, it became available by default.

What difficulty levels are available for RondeauX of RagnaroQ?

The DX charts span Basic Lv5, Advanced Lv8, Expert Lv12 (constant 12.5), and Master Lv14 (constant 14.5).

Who designed the MASTER and EXPERT charts for RondeauX of RagnaroQ?

The MASTER chart was designed by R-blacX of JacQ, and the EXPERT chart was designed by サファ太 (Safata).

Is there an extended version of RondeauX of RagnaroQ?

Yes, an extended version titled RondeauX of RagnaroQ -Crescendo of Cataclysm- appears on the maimai DX goods campaign DiSC -PRiSM- and the maimai DX Best Album Area 3 soundtrack.

Who are the vocalists on RondeauX of RagnaroQ?

The track features vocals by Lily (who also co-wrote the lyrics alongside Morrigan) and 結城碧 (Aoi Yuuki), with guitar performed by Yushi.

RondeauX of RagnaroQ (ロンドーオブラグナロク), maimai DX BUDDiES PLUS Song

All songs

Overview

RondeauX of RagnaroQ (ロンドーオブラグナロク) is an original maimai composition by Morrigan featuring vocalists Lily and 結城碧 (Aoi Yuuki). Released on August 2, 2024 as part of the maimai DX BUDDiES PLUS update, the song was initially unlockable through the Heaven Area 7 (天界ちほー7) by accumulating 850 km of in-game travel distance, before becoming available by default from PRiSM PLUS onward. The track is built around a mythic narrative of two figures, Aluos and Celepris, who govern day and night yet are perpetually at odds. Called together by Lucifer, they temporarily set aside their conflict for the sake of a young girl's tears, a story conveyed through the song's elaborate Japanese lyrics and its accompanying video. Musically, RondeauX of RagnaroQ delivers a high-energy orchestral rock sound at 185 BPM, characteristic of Morrigan's compositional style. Morrigan, also known as Tadahiro Tsuchiya, has provided songs to CHUNITHM, ONGEKI, and REFLEC BEAT, and frequently collaborates with fellow composer Cranky. The song's MASTER chart (Lv14, constant 14.5) was designed by R-blacX of JacQ, while the EXPERT chart (Lv12, constant 12.5) was handled by サファ太 (Safata). The official music video surpassed one million views on YouTube within roughly two weeks of its release, reflecting strong community reception. An extended version titled RondeauX of RagnaroQ -Crescendo of Cataclysm- later appeared on the maimai DX goods campaign DiSC -PRiSM- and the maimai DX Best Album Area 3 soundtrack.

Videos

Official PV

Open

Master chart

Open

Expert chart

Open

Charts

DX

BASIC

5(5)

269 notesDesigner: -|Tap 234Hold 15Slide 4Touch 6Break 10

YouTube

ADVANCED

8(8)

438 notesDesigner: -|Tap 383Hold 10Slide 13Touch 28Break 4

YouTube

EXPERT

12(12.5)

681 notesDesigner: サファ太|Tap 487Hold 49Slide 57Touch 32Break 56

YouTube

MASTER

14(14.5)

1116 notesDesigner: R-blacX of JacQ|Tap 831Hold 60Slide 97Touch 40Break 88

View chart YouTube

Trivia

The song title blends "rondeau" (a medieval and Baroque musical form built on recurring refrains) with "Ragnarok" (the apocalyptic battle of Norse mythology), and is read in Japanese as ロンドーオブラグナロク (Rondō obu Ragnaroku).
The flavor text establishes a narrative about Aluos (day) and Celepris (night), a pair of deities who govern opposite halves of the day. Normally they never meet, but Lucifer summons them to unite for the sake of a young girl's tears.
Morrigan (Tadahiro Tsuchiya) began as a BMS composer in the club Stubborn circle before expanding into commercial rhythm game work, contributing original songs to CHUNITHM, ONGEKI, and REFLEC BEAT, as well as handling orchestral arrangements for the BEMANI SYMPHONY ORIGINAL SOUNDTRACK.
Morrigan has frequently collaborated with composer Cranky, including co-releasing albums and remixing Cranky's "We Gonna Party" as "We Gonna Party -Feline Groove Mix-" for CHUNITHM.
The MASTER chart was designed by R-blacX of JacQ (also credited as Pichineko on the English wiki), while the EXPERT chart was designed by サファ太 (Safata).
The official YouTube video surpassed one million views approximately two weeks after its release, on August 17, 2024, per a post by the video's creator.
An extended arrangement titled RondeauX of RagnaroQ -Crescendo of Cataclysm- was included in the maimai DX goods campaign DiSC -PRiSM- and later appeared on the maimai DX Best Album Area 3 soundtrack.
The composer's official website hosts a detailed breakdown of the song's lyrics, production notes, and instrumental data for download.
In the Chinese version (舞萌DX 2025), the song became unlockable on November 5, 2025, while the Asian version received it on December 6, 2024, both later than the original Japanese release.
The two vocalists are Lily (who also co-wrote the lyrics) and 結城碧 (Aoi Yuuki), a vocalist distinct from the well-known voice actress of the same name, as noted by the English wiki.
The song credits also include Yushi on guitar, にーさん as assistant engineer, and わっふゑ (credited as 呉々 on the English wiki) for the video production.

FAQ

Who composed RondeauX of RagnaroQ?: RondeauX of RagnaroQ was composed by Morrigan (Tadahiro Tsuchiya), a composer active in both doujin and commercial rhythm game scenes who has contributed to CHUNITHM, ONGEKI, REFLEC BEAT, and the BEMANI SYMPHONY ORIGINAL SOUNDTRACK.
What is the story behind RondeauX of RagnaroQ?: The song tells a mythic story about Aluos and Celepris, deities governing day and night who normally never meet. Summoned by Lucifer, they temporarily unite for the sake of a young girl's tears, setting aside their eternal conflict.
How do you unlock RondeauX of RagnaroQ in maimai DX?: In BUDDiES PLUS, the song was unlockable through Heaven Area 7 (天界ちほー7) by reaching a total distance of 850 km. From PRiSM PLUS onward, it became available by default.
What difficulty levels are available for RondeauX of RagnaroQ?: The DX charts span Basic Lv5, Advanced Lv8, Expert Lv12 (constant 12.5), and Master Lv14 (constant 14.5).
Who designed the MASTER and EXPERT charts for RondeauX of RagnaroQ?: The MASTER chart was designed by R-blacX of JacQ, and the EXPERT chart was designed by サファ太 (Safata).
Is there an extended version of RondeauX of RagnaroQ?: Yes, an extended version titled RondeauX of RagnaroQ -Crescendo of Cataclysm- appears on the maimai DX goods campaign DiSC -PRiSM- and the maimai DX Best Album Area 3 soundtrack.
Who are the vocalists on RondeauX of RagnaroQ?: The track features vocals by Lily (who also co-wrote the lyrics alongside Morrigan) and 結城碧 (Aoi Yuuki), with guitar performed by Yushi.