Jennifer Hudson, right, sings while President Barack Obama and first lady Michelle Obama dance at Commander-in-Chief's Inaugural Ball at the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. WASHINGTON (AP) - Beyonce drew a loud cheer at the inauguration Monday even before her impressive rendition of the national anthem. But in the role she played four years ago singing for the president and first lady at the inaugural ball was her "Dreamgirls" co-star Jennifer Hudson. If President Barack Obama's first inaugural theme seemed to be summed up by Beyonce's "At Last," this time it was Hudson's version of Al Green's "Let's Stay Together." Hudson was among the entertainment at Monday night's inaugural balls, joined by Stevie Wonder and Alicia Keys, who modified her hit "Girl on Fire" to sing "He's the president and he's on fire ... Obama's on fire. The crowd at the official Inaugural Ball joined in with the Grammy-nominated fun. anthem "We Are Young." And Wonder got small knots of dancers going with crowd-pleasers such as "Signed, Sealed, Delivered I'm Yours." Earlier in the day, the applause for Beyonce started when she took her place with Jay-Z at the Capitol to watch President Barack Obama take the oath for his second term in office. AP writers Donna Cassata, Darlene Superville, Josh Lederman and Jocelyn Noveck contributed to this report.