《In The Brain》的歌詞如下：
Baby, I don't mean to alarm you
But there's a thought running through my mind
I know you're in the club doing what you do
But I keep it secret, secret
'Cause it's in the brain, in the brain
(Ooh, ooh)
It's all in my head, it's all in my head
(Ooh, ooh)
I don't know if I should say
(But) I don't want to get caught up in something
And you might say, "Why'd you even bother?"
Why try to be romantic, when you're feeling it
I ain't even gonna deny it
It's in the brain, in the brain
(Ooh, ooh)
It's all in my head, it's all in my head
(Ooh, ooh)
I don't know if I should say
(But) I don't want to get caught up in something
Oh no, no, no
You know it could be embarrassing
But it doesn't matter cause it's true
So here's my confession
(Confession)
Oh no, no, no
I can't help it if I'm feeling you more
And it's in the brain, in the brain
(Ooh, ooh)
It's all in my head, it's all in my head
(Ooh, ooh)
I don't know what to do (Do)
And I can't help it if I want you all to know (Oh)
Oh no, no, no
男：
My thoughts are like a train running on a track inside my head
Going nowhere fast, and it won't stop
But you know what? I ain't afraid to admit it (Yeah)
My feelings are all over you girl (All over you)
Yeah yeah yeah yeah
女：
You know what I'm feeling right now? Oh yeah
No way that I could hide it now (Hide it now)
Boy, your face is permanently stamped on my mind now (Now)
Forevermore (Forevermore) 男：Oh no, no, no... 女：Yeah yeah yeah yeah... 男：Oh no, no, no... 女：It won't go away now (Now) 男：我的思念就像一輛火車 穿越我腦海里的軌道，馳向無邊的遠方 不會停留 但我願意承認這一點 我的心情全都因為你而起 我的腦海里全是你 你知道我現在的感覺嗎？ 我無法再隱藏我的感情 你的臉龐在我心中刻下了永久的印記 從此以後 永遠如此 我不知道我該怎么做 但是我不想讓你一無所知 我無法控制自己 不告訴你所有人知道 男：Oh no，no，no... 女：你明白我現在的心情嗎？ 男：No way that I could hide it now (Hide it now) 女：你無法再隱藏你的感情了 男：Forevermore (Forevermore) 女：它不會消失的 男和女：我的思念我的心情，無法自拔的愛戀！