Overview
エゴロック (Ego Rock) is a VOCALOID rock track by producer すりぃ (suriii), featuring the voice of Kagamine Len. Originally released as a standalone single and album in 2021, the song was added to maimai DX UNiVERSE PLUS on August 19, 2022. The title fuses "ego" (エゴ) and "rock" (ロック), encapsulating the song's lyrical preoccupation with ego, defiance, and societal hypocrisy, anchored by the refrain "僕の心はエゴロック" ("my heart is ego rock"). At a relentless 225 BPM, the track pairs distorted guitar riffs with Len's signature high-register vocals, delivered in rapid, almost breathless phrases. The music video was produced by Ocowa.
The MASTER chart, designed by はっぴー (Happy) and rated level 13+ (difficulty constant 13.8), contains exactly 69 Break notes, a deliberate numerical pun on the word "rock." The chart is widely regarded as one of the more forgiving 13.8s, making it a viable target for players aiming for higher rating thresholds. The Expert chart (level 10, constant 10.5) was designed by 畳返し (Seiji Katou). A notable in-game collection achievement required playing エゴロック alongside suriii's earlier maimai hit うっせぇわ (Usseewa) in the same credit, though that song was removed from the arcade version starting with PRiSM, locking the achievement for new players.
Videos
Charts
DX
BASIC
5(5)
170 notesDesigner: -|Tap 150Hold 8Slide 2Touch 7Break 3
ADVANCED
7+(7.6)
271 notesDesigner: -|Tap 223Hold 28Slide 3Touch 13Break 4
EXPERT
10(10.5)
466 notesDesigner: 畳返し|Tap 367Hold 30Slide 18Touch 27Break 24
MASTER
13+(13.8)
690 notesDesigner: はっぴー|Tap 425Hold 48Slide 127Touch 21Break 69
Trivia
- The MASTER chart contains exactly 69 Break notes, a deliberate numerical wordplay connecting the number to the word "rock" (ロック / rokku).
- The collection achievement "はぁ～～～～～～～～～～" required playing both エゴロック and suriii's うっせぇわ in a single credit. Since うっせぇわ was removed from the arcade version at the start of PRiSM, this achievement can no longer be obtained.
- The song is performed using Kagamine Len, one of Crypton Future Media's VOCALOID voicebanks, with composition, arrangement, and lyrics all by suriii.
- The music video was produced by Ocowa, whose visual style complements the song's cynical, rebellious tone.
- The Asian version of maimai DX UNiVERSE PLUS received エゴロック on December 23, 2022. The Chinese version (舞萌DX 2023) added it on September 22, 2023.
- The MASTER chart's difficulty constant of 13.8 places it at the lower end of the 13+ band, and it is often noted by players as being relatively approachable compared to other charts at the same constant.
- Suriii (すりぃ) is also known for composing うっせぇわ (Usseewa), another VOCALOID hit that appeared in maimai DX and became a viral phenomenon in Japan.
- The song length is approximately 1:50, packing dense instrumentation and lyrics into a compact runtime.
FAQ
- Who composed エゴロック (Ego Rock)?
- エゴロック was composed, arranged, and written by すりぃ (suriii), a VOCALOID producer known for viral hits including うっせぇわ (Usseewa).
- Who is the vocalist for エゴロック?
- The song uses Kagamine Len (鏡音レン), the male VOCALOID voicebank developed by Crypton Future Media.
- When was エゴロック added to maimai?
- It debuted in maimai DX UNiVERSE PLUS on August 19, 2022 in Japan and international regions. The Asian version followed on December 23, 2022, and the Chinese version (舞萌DX 2023) on September 22, 2023.
- What BPM is エゴロック?
- The song plays at 225 BPM, a high tempo that drives its aggressive rock instrumentation.
- What difficulty level is エゴロック's MASTER chart?
- The MASTER chart is rated level 13+ with a difficulty constant of 13.8, designed by はっぴー (Happy).
- Why does the MASTER chart have 69 Break notes?
- The 69 Break notes are a deliberate pun, the number plays on the word "rock" (ロック / rokku) in a numerical wordplay characteristic of the designer's sense of humor.
- Who designed the charts for エゴロック in maimai?
- The Expert chart was designed by 畳返し (Seiji Katou), and the MASTER chart was designed by はっぴー (Happy).
- What is the meaning of the title エゴロック?
- The title combines "ego" (エゴ) and "rock" (ロック), reflecting the song's lyrics about ego, rebellion against societal norms, and cynical self-awareness. The recurring line "僕の心はエゴロック" translates to "my heart is ego rock."
