Pada tanggal 7 April 2019, grup idola Korea 1THE9 merilis singel digital pertamanya berjudul "Domino" sebagai pre-release track untuk mini album debut mereka XIX.

Lagu ini menampilkan vokalis Crush, yang memainkan peran penting dalam menciptakan atmosfer dan emosi lagu. "Domino" adalah sebuah kisah tentang hubungan yang mulai runtuh dan kehilangan keyakinan.

Lirik Lagu

[Verse 1: Jeong Jin-seong, Shin Ye-chan, Yu Yong-ha, Lee Seung-hwan]
Oh, don't misunderstand
Don't know that you're pretending (you never did)
To be someone else

[Refrain: Jung Tae-hyun, Jun Do-yun]
You're the only one I think about
No other woman's gaze can even reach me
Why is it like this? No way

[Pre-Chorus: Shin Ye-chan, Jeong Jin-seong, Kim Tae-woo]
Every time, every night
You keep me trapped inside these walls
Just like you always do

[Chorus: Crush, 1THE9]
We're Domino (Domino)
Falling down (Domino)
Falling down (Domino)
Falling down
We're Domino (Domino)
Falling down (Domino)
Falling down (Domino)
Falling down

[Verse 2: Park Sung-won, Yu Yong-ha, Shin Ye-chan, Lee Seung-hwan]
Honestly, my trust is already broken
Like a shattered window, it's too late to fix
We're like dust particles floating in the air
And as time goes by, we're getting closer

[Refrain: Jung Tae-hyun, Jun Do-yun]
You're the only one I think about
No other woman's gaze can even reach me
Why is it like this? No way

[Pre-Chorus: Shin Ye-chan, Jeong Jin-seong, Kim Tae-woo]
Every time, every night
You keep me trapped inside these walls
Just like you always do

[Chorus: Crush, 1THE9]
We're Domino (Domino)
Falling down (Domino)
Falling down (Domino)
Falling down
We're Domino (Domino)
Falling down (Domino)
Falling down (Domino)
Falling down

[Hook: Kim Joon-soo]
Like a domino, you fall apart
My faith in you is crumbling
Like a domino, I'm falling too
My heart is breaking, like a domino

[Bridge: Lee Seung-hwan, Shin Ye-chan, Kim Joon-soo, Jung Tae-hyun]
All the broken things are piling up
It's too late to fix it all
I'll just keep repeating the memories
Of what we used to be

[Chorus: Crush, 1THE9]
We're Domino (Domino)
Falling down (Domino)
Falling down (Domino)
Falling down
We're Domino (Domino)
Falling down (Domino)
Falling down (Domino)
Falling down