First couple dances to 'Let's Stay Together' at inaugural ball

President Obama and Michelle Obama shared a first dance Monday night to the same song that he famously crooned on the 2012 campaign trail: "Let's Stay Together."

The Al Green classic was sung by Grammy and Academy Award winner Jennifer Hudson at both of the official inaugural balls.

During the presidential race, Obama sang a few lines of the tune's chorus at a fundraiser at New York's Apollo Theater.

While President Obama didn't address the crowd (or sing) at the inaugural ball, he did speak to military personnel at the Commander-in-Chiefs ball at the Washington Convention Center. "This party is just another way to say something we can never say enough of, 'Thank you,'" he said.

Michelle Obama dazzled in a red, custom-made Jason Wu chiffon and velvet gown. The couple smiled as thousands of supporters cheered and snapped photos.

They only stayed for one dance, waved to the crowd and moved on to the next event.

Later, Vice President Biden and Jill Biden, wearing a blue Vera Wang gown, danced to Jamie Foxx serenading them with "I Can't Stop Loving You."

Foxx teased Biden, saying "I understand you're a romantic man," before sitting down at the piano and breaking into song.

At the end of the dance, Biden went over to the piano to give Foxx a squeeze on the shoulders.

The sold-out inaugural ball featured a cash bar and snacks, including pretzels and Cheez-its.

Souvenirs were available for partygoers, ranging from a $3 Obama pencil to $45 for a pair of champagne flutes commemorating the inauguration.

Performers at the ball included Alicia Keys - who changed the lyrics of her hit song, "Girl on Fire," to "Obama's on fire" - the band fun., country music star Brad Paisley, Stevie Wonder, and Mexican rock group Mana.

Spotted among the packed crowd: Sen. Jeff Flake (R-Ariz.) and his wife, Sen. Sheldon Whitehouse (D-R.I.), and Rep. John Barrow (D-Ga.).

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