曲名：Quartet
歌手：IS:SUE
配信/発売日：2026-05-20
作詞：Hiyori Nara・Masami Kakinuma・Aeloui・NANO・RINO・Miri・YAGO・Rose Blueming
作曲：pws (LOGOS)・Kurtz (LOGOS)・XD (LOGOS)・Lee Ji Hun
編曲：pws (LOGOS)・Kurtz (LOGOS)・Lee Ji Hun
Can you keep it quiet？
Just for now
まだこれからさ
息潜めた 暗闇の中
Every echo leads us here
私達の Party night
きっと予測できない Perfect sound
赤いカーテンが揺れて
伸びてゆく Sound, like a symphony
思うままに 奏でよう そして Become one
散らばる 音のカケラ
集め We’re all here
4 hearts 重なる Motion
4 steps 向かう Direction
また出会うHarmony
Now we groove
Again the quartet
Oh- Oh- Oh- Mm～
Oh- Oh- Oh- Uh～uh～
輝くどこだって
Now we groove
Again the quartet
譜面の上でDancing
Staccato 優雅に Step by step
逃さないわ Every note
(Singing on the lines)
手を取り合ってGo
続いていくこのShow
この声信じて
偶然じゃない Destiny line
最高の瞬間 Start from here
4 hearts 重なる Motion
4 steps 向かう Direction
また出会うHarmony
Now we groove
Again the quartet
Fo-Four as one
All-All-All for us
Some things never change
1-2-3-4
Stepped up, then we reCONNECT
Welcome, 輝くdiamonds
コエ響かせnext phase
Back again we rise as the quartet
We’re in one rhythm
絶対に途切れない
幸せに似てる
音色 No Limitation
出会った時から
分かってた響く鼓動
4 hearts 重なる Motion
4 steps 向かう Direction
また出会うHarmony
Now we groove
運命の Quartet
Oh- Oh- Oh- Mm～
Oh- Oh- Oh- Uh～uh～
輝くどこだって
Now we groove
運命のQuartet
Can you keep it quiet?
Just for now
Mada kore kara sa
Iki hisometa kurayami no naka
Every echo leads us here
Watashitachi no Party night
Kitto yosoku dekinai Perfect sound
Akai kaaten ga yurete
Nobite yuku Sound, like a symphony
Omou mama ni kanadeyou soshite Become one
Chirabaru oto no kakera
Atsume We’re all here
4 hearts kasanaru Motion
4 steps mukau Direction
Mata deau Harmony
Now we groove
Again the quartet
Oh- Oh- Oh- Mm～
Oh- Oh- Oh- Uh～uh～
Kagayaku doko datte
Now we groove
Again the quartet
Fumen no ue de Dancing
Staccato yuuga ni Step by step
Nigasanai wa Every note
(Singing on the lines)
Te o toriatte Go
Tsuzuiteiku kono Show
Kono koe shinjite
Guuzen ja nai Destiny line
Saikou no shunkan Start from here
4 hearts kasanaru Motion
4 steps mukau Direction
Mata deau Harmony
Now we groove
Again the quartet
Fo-Four as one
All-All-All for us
Some things never change
1-2-3-4
Stepped up, then we reCONNECT
Welcome, kagayaku diamonds
Koe hibikasen next phase
Back again we rise as the quartet
We’re in one rhythm
Zettai ni togirenai
Shiawase ni niteru
Neiro No Limitation
Deatta toki kara
Wakatteta hibiku kodou
4 hearts kasanaru Motion
4 steps mukau Direction
Mata deau Harmony
Now we groove
Unmei no Quartet
Oh- Oh- Oh- Mm～
Oh- Oh- Oh- Uh～uh～
Kagayaku doko datte
Now we groove
Unmei no Quartet
Can you keep it quiet?
Just for now
There’s still more to come
Holding my breath in the darkness
Every echo leads us here
Our Party night
Surely an unpredictable Perfect sound
The red curtain is swaying
Growing Sound, like a symphony
Play as you like and then Become one
Scattered pieces of sound
Collect them We’re all here
4 hearts overlapping Motion
4 steps heading Direction
Meeting again Harmony
Now we groove
Again the quartet
Oh- Oh- Oh- Mm～
Oh- Oh- Oh- Uh～uh～
Shining everywhere
Now we groove
Again the quartet
Dancing on the score
Staccato gracefully Step by step
Don’t miss every note
(Singing on the lines)
Take each other’s hands and Go
This show continues
Believe this voice
Not an accidental Destiny line
The best moment Start from here
4 hearts overlapping Motion
4 steps heading Direction
Meeting again Harmony
Now we groove
Again the quartet
Fo-Four as one
All-All-All for us
Some things never change
1-2-3-4
Stepped up, then we reCONNECT
Welcome, shining diamonds
Let the voice resound next phase
Back again we rise as the quartet
We’re in one rhythm
Absolutely unbroken
Resembling happiness
Timbre No Limitation
Since we met
We’ve known the beating that rings
4 hearts overlapping Motion
4 steps heading Direction
Meeting again Harmony
Now we groove
The Quartet of fate
Oh- Oh- Oh- Mm～
Oh- Oh- Oh- Uh～uh～
Shining everywhere
Now we groove
The Quartet of fate
你能保持安靜嗎？
就現在
一切都還在繼續
在黑暗中屏住呼吸
每個迴音都引領我們到這裡
屬於我們的派對之夜
肯定是難以預測的完美聲音
紅色的窗簾在晃動
不斷成長的聲音，就像交響曲
隨心所欲地演奏，然後融為一體
散落在各處的音響碎片
把它們聚集起來，我們都在這裡
四顆心重疊的節奏
四步前行的方向
再次相遇的和聲
現在我們一起搖擺
再次奏起四重奏
喔～喔～喔～嗯～
喔～喔～喔～嗯～嗯～
無論何處都閃耀著光芒
現在我們一起搖擺
再次奏起四重奏
在樂譜上跳舞
斷奏優雅地一步一步
不漏掉每一個音符
（在線條上歌唱）
牽起彼此的手，前進
這場表演還在繼續
相信這個聲音
不是偶然的命運線
最美好的瞬間從這裡開始
四顆心重疊的節奏
四步前行的方向
再次相遇的和聲
現在我們一起搖擺
再次奏起四重奏
四個合而為一
一切都是為了我們
有些事情永遠不會改變
1-2-3-4
加快步伐，然後重新連接
歡迎，閃耀的鑽石
讓聲音響徹下一個階段
再次回來，我們以四重奏的形式崛起
我們處於同一節奏中
絕對不會中斷
像幸福一樣
音色沒有限制
從相遇的那一刻起
就知道那跳動的心跳
四顆心重疊的節奏
四步前行的方向
再次相遇的和聲
現在我們一起搖擺
命運的四重奏
喔～喔～喔～嗯～
喔～喔～喔～嗯～嗯～
無論何處都閃耀著光芒
現在我們一起搖擺
命運的四重奏
