Lyrics:

will.i.am:
Big fat bass
The big fat bass
The big fat bass
The big fat bass

The big fat bass
The big fat bass
The big fat bass

Big fat bass
The big fat bass
The big fat bass
The big fat bass

The big fat bass
The big fat bass
The big fat bass

I can be the treble, baby
You can be the bass
You can be the bass
You can be the bass

I can be the treble, baby
You can be the bass
You can be the bass
You can be the bass

I can be the treble, baby
You can be the bass
You can be the bass
You can be the bass

I can be the treble, baby
You can be the bass
You can be the bass
You can be the bass

Britney:
Hey, you see down on the floor
I want you to take me higher
Till I can't take it no more

(It's gettin' bigger, the bass is gettin' bigger)

And now, you see me up on the sky
I was rocking the bottom
Now look at me I can fly

(It's gettin' bigger, the bass is gettin' bigger)

I can be your treble, baby
You can be my bass
You can be my bass
You can be my bass

I can be your treble, baby
You can be my bass
You can be my bass
You can be my bass

(It's gettin' bigger, the bass is gettin' bigger)
(It's gettin' bigger, the bass is gettin' bigger)
(It's gettin' bigger, the bass is gettin' bigger)
(It's gettin' bigger, the bass is gettin' bigger)

Hey, you see me out in the night
Wanna go out dancing
So I can feel alright

(It's gettin' bigger, the bass is gettin' bigger)

Yo, take me out to the lights
I wanna have me a good time
The bass is feeling nice

(It's gettin' bigger, the bass is gettin' bigger)

I can be your treble, baby
You can be my bass
You can be my bass
You can be my bass

I can be your treble, baby
You can be my bass
You can be my bass
You can be my bass

will.i.am:
Y'all better get ready for the kick drum
For the kick drum, for the kick drum
Y'all better get ready for the kick drum
For the kick drum, for the kick drum

It's a kick drum, come and get some
The sound that's rocking your system
When it pounds, it cause an addiction
Y'all better have a prescription
Me and Brit got the whole club trippin'
They sit and wait and listen

For the kick drum, for the kick drum
For the kick drum, for the kick drum

For the big big fat fat bass
Rocking all in your face
Vibration got the place
Right now let's get crazy

Here we go, here we go
Everybody in the place get frantic
This beat right here's beat is gigantic

(It's gettin' bigger, the bass is gettin' bigger)
(It's gettin' bigger, the bass is gettin' bigger)
(It's gettin' bigger, the bass is gettin' bigger)
(It's gettin' bigger, the bass is gettin' bigger)

I can be your treble, baby
You can be my bass
You can be my bass
You can be my bass

I can be your treble, baby
You can be my bass
You can be my bass
You can be my bass

I can be your treble, baby
You can be my bass
You can be my bass
(The Femme Fatale)