Lyrics for Jack Black: Happy Birthday

Jack Black sings an out of tune Happy Birthday a capella as part of the American Cancer Society's ad campaign "Celebrate More Birthdays".

Happy Birthday to You
Happy Birthday to You
Happy Birthday, Happy Birthday
Happy Birthday to You.

We agree that you should celebrate more birthdays and that you should enjoy every birthday that you celebrate. Thanks Jack - for putting yourself out there - and you are out there.

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