Rehab by Amy Winehouse is featured in Pilot, the first episode of Season One. It is sung by Vocal Adrenaline, with Giselle singing lead.

They sing this at their Invitationals. It is witnessed by the New Directions, when Emma and Will take them to see their "competition" because Will doesn't think Vocal Adrenaline has the talent that the New Directions have. However, it turns out to be a spectacular performance, leaving the members of the New Directions in shock, causing Tina to declare that they are "d-d-doomed." The song appears somewhat unexpectedly following choral chants of "Ohio," and is sung in a satirically upbeat manner.

Lyrics:
Vocal Adrenaline:
Ohio, Ohio, Ohio
They tried to make me go to rehab
But I said, "No, no, no"
Yes, I've been black
But when I come back
You'll know, know, know
I ain't got the time (Vocal Adrenaline Girls: The time)
And if my daddy thinks I'm fine
He's tried to make me go to rehab
But I won't go, go, go

Vocal Adrenaline Girls:
I'd rather be at home with Ray (Giselle: With Ray)

Vocal Adrenaline Boys:
I ain't got seventy days

Vocal Adrenaline Girls:
'Cause there's nothing (Vocal Adrenaline Boys: Nothing)
Nothing you can teach me

Vocal Adrenaline Boys:
That I can't learn (Giselle: Can't learn) from Mr. Hathaway

Giselle:
Yeah, yeah

Vocal Adrenaline:
I didn't get a lot in class (Vocal Adrenaline Boys: Whoah, oh, woah)
But I know it don't come (Giselle: Don't come)

Giselle with Vocal Adrenaline:
In a shot glass

Vocal Adrenaline:
They tried to make me go to rehab
But I said, "No, no, no" (Giselle: No!)
Yes I've been black
But when I come back
You'll know, know, know
I ain't got the time (Giselle: Got the time)
And if my daddy thinks I'm fine
They tried to make me go to rehab
But I won't go, go, go (Giselle: Go, go, whoah)

Vocal Adrenaline Girls:
The man said,

Vocal Adrenaline Boys:
"Why do you think you here?"

Vocal Adrenaline:
"Why do you think you here?"

Vocal Adrenaline Girls:
I said, "I got no idea." (Giselle: I got no idea)

Vocal Adrenaline Girls:
"I'm gonna (Vocal Adrenaline Boys: Gonna)
Gonna"

Vocal Adrenaline:
"Lose my baby." (Giselle: I'm gonna lose my baby, yeah)

Vocal Adrenaline Girls:
"So, I always keep a bottle near."

Vocal Adrenaline (Vocal Adrenaline Boys):
He said, "I just think your depressed." (Just think you're depressed) (Giselle: Depressed!)
This me (This me), "Yeah, baby, and the rest." (Giselle: And the rest!)
They tried to make me go to rehab
But I said, "No, (No) no, (No) no."
Yes, I've been black
But when I come back
You'll know, (Know) know, (Know) know

Vocal Adrenaline Boys:
I don't never wanna drink again (Giselle: Yeah!)

Vocal Adrenaline Girls (with Giselle):
I just, ooh, I (just need a friend) (Vocal Adrenaline Boys: I need a friend)

Vocal Adrenaline Boys:
I just need a friend
I'm not gonna spend ten weeks
I'm not gonna spend it

Vocal Adrenaline:
Have everyone think I'm on the mend (Giselle: Mend, yeah, yeah, yeah)

Vocal Adrenaline Girls:
It's not just my pride (Vocal Adrenaline Boys: Just my pride)

Vocal Adrenaline:
It's just 'till these
Tears have dried
They tried to make me go to rehab
But I said, "No, no, no" (Giselle: Oh, no)
Yes I've been black
But when I come back
You'll know, know, know
I ain't got the time (Vocal Adrenaline Girls: Time)
And if my daddy thinks I'm fine (Vocal Adrenaline Girls: Daddy thinks I'm fine)
They tried to make me go to rehab
But I won't go, go, go