作曲 : Madonna, Maya Arulpragasam, Martin Solveig
 作词 : Madonna, Maya Arulpragasam, Martin Solveig
And the beat goes on, I'm a happy girl
It's my birthday song, in my happy world
I know it's gonna be a good day
Oh yeah, today's my birthday
And the beat goes on (and the beat goes on)
I'm a happy girl (I'm a happy girl)
It's my birthday song (oh yeah, it's my birthday)
In my happy world (in my happy world)
Light my candles, gotta make a wish
Wrap up the present and seal it with a kiss
Give me a spanking, start the day off right (ooh-wee!)
'Cause it's my day, you're gonna sing my song
And the beat goes on (and the beat goes on)
I'm a happy girl (I'm a happy girl)
It's my birthday song (oh yeah, it's my birthday)
In my happy world (in my happy world)
I know it's gonna be a good day
Oh yeah, today is my birthday
I'm a happy girl (I'm a happy girl)
My type of party there's no hangover
So grab your things you better come over
We get high and we still stay sober
We throw it down and then we start over
My type of party there's no hangover
And the beat goes on (and the beat goes on)
I'm a happy girl (I'm a happy girl)
It's my birthday song (oh yeah, it's my birthday)
In my happy world (in my happy world)
I want a diamond, don't give me a fake
I let you lick the frosting off my cake
Give me a spanking, start the day off right (ooh-wee!)
'Cause it's my day, you're gonna sing my song
And the beat goes on
I'm a happy girl
It's my birthday song
In my happy world
I know it's gonna be a good day
Oh yeah, today is my birthday
I'm a happy girl, in my happy world
I know it's gonna be a good day
Oh yeah, today is my birthday
I'm a happy girl (it's my birthday every day!)
Sing my song tonight, sing my song tonight (Na na na)
"Happy Birthday!"