Listen: Joe and Jill Biden sing "Happy birthday, Dr. Fauci"

President-elect Joe Biden and First Lady-to-be Dr. Jill Biden sang “Happy Birthday” to National Institute of Allergy and Infectious Diseases director Dr. Anthony Fauci on Thursday, marking his 80th birthday.

In a tweet by Dr. Biden, which her husband retweeted, the two sang “Happy Birthday, Dr. Fauci,” in different keys.