Michael:
Lisa, it's your birthday.
God bless you this day.
You gave me the gift of a little sister,
And I'm proud of you today.

Michael and Bart:
Lisa, it's your birthday.
Happy birthday, Lisa.
Lisa, it's your birthday.
Happy birthday, Lisa.

Michael:
I wish you love and good will.
[ From: http://www.elyrics.net ]
I wish you peace and joy.

Bart:
I wish you better than your heart desires.

Michael:
And your first kiss from a boy.

Michael and Bart:
Lisa, it's your birthday.
Happy birthday, Lisa.
Lisa, it's your birthday.
Happy birthday, Lisa.

Bart:
Yeah!