Just curious cause it's been bothering me.

No, she doesn't. But she sort of sings when she is working on the car...

It's Kay Hanley who sings from the band "letters to Cleo"

Rachael and the other girls did sing some of the backing vocals. She is credited as one of the "pussycats".

-TR

yeah, she and the other girls are now part of the pussycats, as well as TR

How did TR do that? Or are yall just being sarcastic...

They are referring to the custom title under TR's name, which I assigned.

Rachael can join my band. We suck, maybe having a celebrity in our band will make us a bit cooler. Maybe our cool level will be raised to 15!! Whoo!!

"So I'll stick this gun up to my face, and make a bet on my life, you won't pull through tonight, that's how little faith I have in you and me, another day spinning down the drain..."

Can I have a custom title on my name? That would be soooo cool!

Did she sing in "Spin Around" cuz I heard she did or something

~HawkDawg~

Rachael did backup singing for a few songs. "Spin Around" was one of them.

-TR

So what're other songs she did backup singing?

"WE ARE NOT SEPERATE FROM SPIRIT, WE ARE IN IT" :: Plotinus

Yes she does, if you watch the DVD version on the backstage pass, towards the end it shos them learning how to play the song and sing the lyrics. They go through a recording room and everything. need more proof? here is an actual chat room with rachael promoting her movie, ive given the section of the chat where she talk about it.
Corusco in Onstage2 asks: Do you still remember how to play the three Josie songs?

Rachael Leigh Cook says: Probably. I haven't tried lately. (laughs) I stopped about a
month after we finished which is about a year ago.

Nomac-
"Puppies...turn into dogs...who get old...and DIE!