《Sing Out》是乃木坂46演唱的歌曲，歌詞如下：
Verse 1：
Sing out, let your voice be heard
You got the power, you got the fire
Come on, let it out, let it out
You got the passion, you got the fire in you
Chorus：
We are the champions, of the world
We got the passion, we got the fire
Come on, sing out, let it out
We are the ones, we are the ones
Verse 2：
When you're feeling down and out
You can't give up, you've got to keep on going
When you're feeling like giving up
Just remember that there's still hope in you
Chorus：
We are the champions, of the world
We got the passion, we got the fire
Come on, sing out, let it out
We are the ones, we are the ones
Bridge：
You've got to believe in yourself
You've got to believe in your dreams
No matter what they say, you've got to keep going
You've got to stand up and fight for what you believe in
Chorus：
We are the champions, of the world
We got the passion, we got the fire in us now
Come on, sing out loud, let it out now, sing out now
Out now! We are the ones! We are the ones! We are the ones!
Out now! We are the champions! We are the champions!
Out now! We are here to stay forever! Forever! Forever!
Out now! We are here to stay forever! Forever! Forever!
Out now! We are here to stay forever! Forever! Forever!