[Intro: Dahyun, Chaeyoung, Dahyun & Chaeyoung]
Trying to let you know
I send you a sign, send you a signal
I must let you know
I send you a sign, send you a signal
I send you a sign, send you a signal
I send you a sign, send you a signal
I send you a sign, send you a signal
I must let you know

[Refrain: Momo, Mina, Momo & Mina]
I send you a sign, send you a signal
But it doesn't work at all
I give you a glance and keep throwing hints
But you don't understand
You really get me so frustrated
I really don't know why
Once again I gather up the courage
I send you a sign, send you a signal

[Verse 1: Jeongyeon, Chaeyoung]
No matter what glance, gesture or expression I give
It's no use, nothing works
You just don't get it, do you
What more can I do to express how I feel
[Pre-Chorus: Jihyo, Nayeon]
Didn't rеalize it at first, but
At some point I started to likе you,silly
How could you be so unaware
When will you stop being so obtuse
Treating me only as a friend
That is not what I want

[Chorus: Tzuyu, Sana]
I send you a signal, send you a signal
Tingling Tingling Tingling Tingling
I want you, I want you
Why won't you respond
Whenever I see you, I send you my heart
Tingling Tingling Tingling Tingling
I'm waiting for you, it's all so obvious
Why don't you understand

[Post-Chorus: Dahyun, Chaeyoung]
Trying let you know
I send you a sign, send you a signal
I must let you know
I send you a sign, send you a signal

[Verse 2: Jeongyeon, Mina]
When I smile at you, you really ought to know
It happens too often to be a coincidence
When I keep talking to you, you really should notice
How I keep on hanging around you
[Pre-Chorus: Jihyo, Nayeon]
Didn't realize it at first, but
At some point I started to like you,silly
How could you be so unaware
When will you stop being so obtuse
Treating me only as a friend
That is not what I want

[Chorus: Tzuyu, Sana]I send you a signal, send you a signal
Tingling Tingling Tingling Tingling
I want you, I want you
Why won't you respond
Whenever I see you, I send you my heart
Tingling Tingling Tingling Tingling
I'm waiting for you, it's all so obvious
Why don't you understand

[Bridge: Dahyun, Jihyo, Momo, Nayeong]
Tururututu tururututu
Tingling Tingling Tingling Tingling
Tururututu tururututu
Why won't you respond
Tururututu tururututu
Tingling Tingling Tingling Tingling
Tururututu tururututu
Why don't you understand
[Refrain: Momo, Mina, Momo & Mina]
I send you a sign, send you a signal
But it doesn't work at all
I give you a glance and keep throwing hints
But you don't understand
You really get me so frustrated
I really don't know why
Once again I gather up the courage
I send you a sign, send you a signal