We Are One: The Obama Inaugural Celebration at the Lincoln Memorial was a live event held at the Lincoln Memorial on January 18, 2009. 400,000 people gathered on the Mall in Washington, D.C. for a concert and series of speeches from a number of celebrities to celebrate the inauguration of Barack Obama as President of the United States two days later.
Rosita also appeared in pre-concert segment with Elmo. Elmo explained that in an effort to make the event more balanced and bipartisan, he (a red monster), brought in Rosita (a blue monster). After a brief quarrel as to how the two would proceed, the pair agreed to lead the crowd in singing "Yankee Doodle Boy".
Other performers at the event included Denzel Washington, Bruce Springsteen, Jamie Foxx, Renée Fleming, Tom Hanks, Marisa Tomei, James Taylor, John Legend, Queen Latifah, Herbie Hancock, Sheryl Crow, Jack Black, Garth Brooks, Forest Whitaker, Stevie Wonder, Samuel L. Jackson, and Pete Seeger.