Happy Birthday的英文歌詞如下：
Happy birthday to you
Happy birthday to you
Happy birthday dear [名字],
Happy birthday to you
Come on, sing with me
Happy birthday to you
It's your special day
So let the good times roll
Come on and have a ball
Happy birthday, dear [名字]
With this song we hope your day is grand
All our love, we dedicate
To you and here's the rest of the band
Now it's time to blow out the candles
Make a wish and make a plan
Happy birthday to you
Happy birthday to you
Happy birthday, dear [名字],
Happy birthday to you.