《Signal》的歌詞作者是分島花音，以下為其演唱的《Signal》的歌詞：
You can hear my heartbeat
Moving further away
Everytime I think about it
I feel like I'm going crazy
You can feel my silence
It's like a signal
Everytime I hear your voice
I feel like I'm going out of my mind
So I say goodbye
Just a little bit
Just a little bit more
And I'll be alright
So I say hello
Just a little bit
Just a little bit more
And I'll be alright
Waiting for the signal
That it's safe to come out
You're still on my mind
Everywhere I go
So I say goodbye
Just a little bit more
中文翻譯：
《Signal》的歌詞：
你可以聽見我的心跳
漸漸遠離
每次我想起它