
'Alex was one of you,' Obama said of Okrent.

Proceeds from the ball will go to a memorial fund for Alex Okrent, a campaign worker who collapsed and died at Obama's campaign headquarters in July.

She also sang 'Edge of Glory' before Tony Bennett joined her for a duet of 'The Lady is a Tramp,' a track the odd couple first recorded together in 2011.ĭavid Plouffe, the campaign manager for Obama's 2008 bid for the White House, and Jim Messina, the former White House Deputy Chief of Staff for Operations, also addressed the crowds, followed by speeches of thanks from Vice President Joe Biden and his wife Jill. Lady Gaga thanked the president for standing up for gay rights and dedicated 'Born This Way' to him.

The crowd then serenaded the President and his wife with an impromptu rendition of 'Signed, Sealed, Delivered, I'm Yours,' one of the many campaign theme songs, guests revealed on Twitter.
