[Letra de "Birthday"]

[Estribillo]
They say it's your birthday
Well, it's my birthday too, yeah
They say it's your birthday
We're gonna have a good time
I'm glad it's your birthday
Happy birthday to you

[Puente]
Yes, we're going to a party, party
Yes, we're going to a party, party
Yes, we're going to a party, party

[Refrán]
I would like you to dance (Birthday)
Take a cha-cha-cha-chance (Birthday)
I would like you to dance (Birthday)
Dance, yeah, woo, come on (Come on)

[Instrumental]

[Refrán]
I would like you to dance (Birthday)
Take a cha-cha-cha-chance (Birthday)
I would like you to dance (Birthday)
Woo, dance! Dance!
[Estribillo]
They say it's your birthday
Well, it's my birthday too, yeah
They say it's your birthday
We're gonna have a good timе
I'm glad it's your birthday
Happy birthday to you