Obamas tape an appearance on 'American Idol'

President Barack Obama and First Lady Michelle Obama will appear on Fox's number one show, "American Idol" in a special charity performance set to air next week.

According to Fox News, the Obamas taped the segment on Wednesday afternoon (shown here), before the president departed for Prague to sign the START treaty.

The annual concert, titled "Idol Gives Back" is a two-hour episode that raises money for charities. To date, more than $140 million has been contributed by viewers for organizations worldwide. Fox recently announced that the recipients of this year's donations will be Children's Health Fund, Feeding America, Malaria No More, Save the Children's U.S. Programs and the United Nations Foundation.

The episode will air at 8 p.m. on Wednesday, April 21.

Photo courtesy of Fox News