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Overview
DETARAME ROCK&ROLL THEORY (デタラメロックンロールセオリー) brings the playful, irreverent energy of the Irodorimidori (イロドリミドリ) project to maimai. The song features Naru Hakobe (箱部 なる), the bassist of the fictional band unit, voiced by M・A・O (Mao Ichimichi). Composition and arrangement come from D.watt of the doujin circle IOSYS, with lyrics by Lettuce Shichijou and a music video by 鑓田 (alpha complex). The title, blending "detarame" (でたらめ, meaning ridiculous or nonsensical) with "rock and roll theory", sets the tone for a cheeky, energetic rock number built around a punchy bassline and self-deprecating humor about lazy music students who just want to rock.
Originally debuting in SEGA's CHUNITHM arcade rhythm game in January 2016, the song crossed into maimai on Valentine's Day 2017 with the MURASAKi version. It sits in the ONGEKI & CHUNITHM category (オンゲキ&CHUNITHM), reflecting the cross-franchise collaboration that brought Irodorimidori content into maimai. The Master chart, designed by Jack, earned a 13+ difficulty rating (13.8 constant) and is known for its dense slide patterns that test a player's spatial awareness and hand coordination, a fitting challenge for a song whose chorus gleefully declares "let's just be ridiculous!" (もうデタラメでいいじゃん). A full version of the song appears on the first Irodorimidori album titled 単位 (Tan'i), which shares its name with one of the song's recurring lyrics.
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Trivia
- DETARAME ROCK&ROLL THEORY first appeared in CHUNITHM on January 21, 2016, before crossing over to maimai MURASAKi on February 14, 2017.
- The song is performed by Naru Hakobe (箱部 なる), the bassist character of the Irodorimidori (イロドリミドリ) fictional band unit. Her voice is provided by M・A・O (Mao Ichimichi).
- Composition and arrangement were handled by D.watt of the doujin music circle IOSYS, known for contributing to various rhythm game series.
- The lyrics, written by Lettuce Shichijou, feature Naru complaining about having no credits (単位ない) and no motivation, but still wanting to rock, capturing a playful slacker-band aesthetic.
- In the early CHUNITHM builds (before AIR), the song was credited as 箱部 なる(イロドリミドリ) rather than the later credit with the CV tag.
- An UTAGE (宴) chart was added to maimai MURASAKi PLUS on November 21, 2017, with the subtitle 'スライドの発射タイミング・速度がデタラメ' (slide launch timing and speed are ridiculous). This chart was later revived in maimai DX BUDDiES on December 25, 2023, and in the Asian version on May 17, 2024.
- In Asian English versions of maimai, the artist credit appears as 'Naru Hakobe(CV:M・A・O)'.
- CHUNITHM received an appropriately named WORLD'S END chart titled 'DETARAME ROCK&NOTES THEORY' (譜面rand()号), playing on the song's 'ridiculous' theme by randomizing note patterns.
- The music video for the song was created by 鑓田 (alpha complex), a visual artist who has contributed movie content to multiple rhythm game tracks.
- The Master chart in maimai was designed by Jack at difficulty 13+ (13.8 constant), featuring 813 total notes with a high density of Slide notes (145).
- The song's BPM stays at a steady 140 throughout, with no tempo changes, unusual for a chart with such chaotic energy and design gimmicks.
- A full-length version appears on the first Irodorimidori album 単位 (Tan'i), which shares its title with a recurring word in the lyrics.
FAQ
- Who composed DETARAME ROCK&ROLL THEORY?
- The song was composed and arranged by D.watt, a member of the doujin music circle IOSYS.
- When was DETARAME ROCK&ROLL THEORY added to maimai?
- It was added to maimai MURASAKi on February 14, 2017, after originally debuting in CHUNITHM on January 21, 2016.
- Who is the vocalist of DETARAME ROCK&ROLL THEORY?
- The vocals are performed by Naru Hakobe (箱部 なる), a character from the Irodorimidori band unit, voiced by M・A・O (Mao Ichimichi).
- What difficulty is the Master chart of DETARAME ROCK&ROLL THEORY?
- The Master chart is rated 13+ with a level constant of 13.8. It features 813 notes, including a high count of 145 Slide notes, and was designed by Jack.
- What does 'DETARAME ROCK&ROLL THEORY' mean?
- デタラメ (detarame) means 'ridiculous' or 'nonsensical' in Japanese, so the title roughly translates to 'Ridiculous Rock & Roll Theory', reflecting the song's playful, chaotic theme.
- What is the Irodorimidori series?
- Irodorimidori (イロドリミドリ) is a SEGA media project featuring a fictional band unit of music-loving schoolgirls. Each member represents a different instrument, and the series spans multiple rhythm games including CHUNITHM, maimai, and ONGEKI.
- Does DETARAME ROCK&ROLL THEORY have an UTAGE chart?
- Yes, an UTAGE (宴) chart was added in maimai MURASAKi PLUS on November 21, 2017, with a gimmick focused on irregular slide timing and speed. It was revived in maimai DX BUDDiES on December 25, 2023.
- Is there a full version of DETARAME ROCK&ROLL THEORY?
- Yes, a full-length version is included on the first Irodorimidori album titled 単位 (Tan'i).
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