"みんなのマイマイマー" (Minna no Maimaimā) is a commissioned denpa (電波) track created for maimai's GreeN version, representing a notable crossover between two major figures in the Japanese doujin music scene. The song pairs ビートまりお of COOL&CREATE, widely known for the iconic Touhou arrangement "ナイト・オブ・ナイツ" (Night of Knights), with ARM of IOSYS, the prolific composer behind viral hits such as "チルノのパーフェクトさんすう教室" (Cirno's Perfect Math Class) and "Streak." ARM composed the track, while ビートまりお and 山本椛 (the latter uncredited in the in-game artist field) provide the rapid-fire vocal delivery characteristic of the denpa style. At 175 BPM, the song is relentlessly upbeat, driven by playful, almost nonsensical lyrics that celebrate maimai itself. The accompanying video was produced by 宇田てとら, the same illustrator and animator behind "チルノのパーフェクトさんすう教室." Its standout visual, a girl wearing a Naruto hoodie, has a name revealed in the credits: 舞真志穂, a kanji construction that incorporates 舞 (ma), playfully tying the character back to the game's name. Unlock mechanics for the song evolved over time: it initially required a 5000 maimile purchase during GreeN, then became generally available with the ORANGE version update in September 2014. The Re:MASTER chart, added on September 22, 2022, carries a distinctive production story. It was constructed live during the maimai 10th Anniversary All-Night Broadcast, with chart designer はっぴー building the pattern in real time on stream. The chart is credited under the pseudonym "みんなでマイマイマー", a playful twist on the song title that shifts the meaning from "Everyone's Maimaimā" to "Let's all Maimaimā." The MASTER chart, by designer ニャイン, features an unusually Break-heavy note composition, and the Re:MASTER pushes further with a high Slide count of 164, reflecting a design philosophy that emphasizes dense, flowing patterns.