Overview
Phase: Theatre (フェーズ シアター) is a maimai original song performed by Nakuru Aitsuki (藍月なくる), marking her second appearance in the series following Ourania. The track was composed, arranged, and lyrically written by Hikaru Sakurazawa (櫻澤ヒカル), who also handled piano and programming, with guitar work by Mitsuyo (三代; Takashi Itou) and mixing by Yōdai Ishizuka (石塚陽大). Its BPM of 195 places it among the faster original compositions in the maimai catalogue.
The song debuted on February 6, 2026 as part of maimai でらっくす CiRCLE, unlockable by reaching 800 km of total distance in Sky Street Area 7 (スカイストリートちほー7). Its jacket artwork, created by ヨ剤 with video production by tugutugu, accompanies a theatrical flavor text that tells a fragmentary story: set in Raum's white laboratory filled with impostors, the narrator identifies as the 31st fake, and reflects on a world line where they and "Akatsuki" vanish. This dark, self-referential narrative complements the song's urgent, piano-driven arrangement and Aitsuki's dramatic vocal delivery.
The chart roster features two credited note designers: サファ太 (Safata) on Expert and Jack on Master. The Master chart, rated 13+ with a constant of 13.8 and 965 total notes, presents a dense layout typical of Jack's style, with heavy Tap counts (681) demanding strong stamina and accuracy at high tempo.
Videos
Charts
This song requires certain conditions to be playable.
DX
BASIC
5(5)
232 notesDesigner: -|Tap 181Hold 25Slide 7Touch 16Break 3
ADVANCED
8(8)
398 notesDesigner: -|Tap 351Hold 19Slide 11Touch 13Break 4
EXPERT
11+(11.6)
620 notesDesigner: サファ太|Tap 400Hold 79Slide 57Touch 22Break 62
MASTER
13+(13.8)
965 notesDesigner: Jack|Tap 681Hold 56Slide 112Touch 48Break 68
Trivia
- Phase: Theatre is Nakuru Aitsuki's second song in the maimai series, following Ourania (added in maimai DX BUDDiES).
- The song's flavor text references 'Raum's white laboratory', Raum (ラウム) is likely a reference to the demon Raum from grimoire tradition, known as a great count of hell who destroys cities and bestows knowledge.
- The flavor text describes the narrator as the '31st fake' (31番目のにせもの), positioning the song within a story about identity, duplication, and world-line erasure alongside a figure named 'Akatsuki' (暁, meaning 'dawn').
- Hikaru Sakurazawa, the composer, is a multi-instrumentalist who handled composition, arrangement, lyrics, piano, and programming, the widest single-person credit on the track.
- Guitarist Mitsuyo (三代) is an alternative credit for Takashi Itou (伊藤 隆), a session musician active across multiple rhythm-game original soundtracks.
- Phase: Theatre is one of the unlockable rewards in the Sky Street Area 7 (スカイストリートちほー7) progression system, requiring 800 km of accumulated distance.
- The song's length is 2 minutes and 32 seconds, making it a standard-length original track for the maimai DX series.
- The Expert chart (Lv. 11+, constant 11.6) was designed by サファ太 (Safata) and features 62 Break notes, a high count for the difficulty tier, emphasizing accuracy on the Break-heavy sections.
- Jack, the Master chart designer (Lv. 13+, constant 13.8), is a veteran maimai charter known for demanding high-level layouts; the Master chart contains 681 Tap notes out of 965 total.
FAQ
- Who composed Phase: Theatre for maimai?
- Phase: Theatre was composed, arranged, and written by Hikaru Sakurazawa (櫻澤ヒカル), who also played piano and handled programming. Guitar was performed by Mitsuyo (三代; Takashi Itou), and the track was mixed by Yōdai Ishizuka (石塚陽大).
- Who sings Phase: Theatre?
- The song is performed by Nakuru Aitsuki (藍月なくる), marking her second maimai original song after Ourania.
- How do you unlock Phase: Theatre in maimai DX CiRCLE?
- Phase: Theatre is unlocked by reaching a total distance of 800 km in Sky Street Area 7 (スカイストリートちほー7), a progression area in maimai でらっくす CiRCLE.
- What difficulty levels do the Phase: Theatre charts have?
- Phase: Theatre has four DX chart difficulties: Basic at Lv. 5 (constant 5.0), Advanced at Lv. 8 (constant 8.0), Expert at Lv. 11+ (constant 11.6), and Master at Lv. 13+ (constant 13.8).
- Who designed the Phase: Theatre charts?
- The Expert chart was designed by サファ太 (Safata), and the Master chart was designed by Jack. The Basic and Advanced charts have no credited designer.
- What is the story behind Phase: Theatre's flavor text?
- The flavor text describes a setting called 'Raum's white laboratory' filled with impostors, where the narrator identifies as the 31st fake. It contemplates a world line where the narrator and a figure named 'Akatsuki' (dawn) vanish, suggesting themes of identity, duplication, and existential erasure.
- When was Phase: Theatre added to maimai?
- Phase: Theatre was added to maimai on February 6, 2026 as part of the maimai でらっくす CiRCLE version update.
