Inauguration 2009 Throwback: We Are One Concert

Take a look back at the historic musical event.

We Are One - Hundreds of thousands of people from every corner of the United States crammed onto the grounds of the National Mall Sunday, Jan. 18, 2009 for the opportunity to take in a concert of historic proportions."We Are One: The Obama Inaugural Celebration at the Lincoln Memorial" was a free concert featuring performances by Stevie Wonder, Bruce Springsteen, Beyoncé, U2 and other artists. (Photo: Win McNamee/Getty Images)

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We Are One - Hundreds of thousands of people from every corner of the United States crammed onto the grounds of the National Mall Sunday, Jan. 18, 2009 for the opportunity to take in a concert of historic proportions."We Are One: The Obama Inaugural Celebration at the Lincoln Memorial" was a free concert featuring performances by Stevie Wonder, Bruce Springsteen, Beyoncé, U2 and other artists. (Photo: Win McNamee/Getty Images)

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All Smiles - The crowd erupted in cheers when Barack Obama and his wife, Michelle, arrived, walking down the steps of the memorial. (Photo: Jewel Samad/AFP/Getty Images)

Prayer for the President - The event began with an invocation by the Right Rev. Gene Robinson, who asked the crowd to pray for “understanding that our president is a human being and not a messiah.”(Photo: Justin Sullivan/Getty Images)

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Prayer for the President - The event began with an invocation by the Right Rev. Gene Robinson, who asked the crowd to pray for “understanding that our president is a human being and not a messiah.”(Photo: Justin Sullivan/Getty Images)

Obama Speaks - President Obama will speak on the steps of the Lincoln Memorial on Aug. 28, the actual date on which King delivered his "I Have a Dream Speech." His remarks will be part of the Let Freedom Ring ceremony organized by the King Center.(Photo: Justin Sullivan/Getty Images)

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We Are One - "Welcome to this celebration of American renewal," President-elect Obama said. "It is you, Americans of every race and region and station who came here because you believe in what this country can be and because you want to help us get there ... And as I prepare to assume the presidency, yours are the voices I will take with me every day I walk into that Oval Office." (Photo: Justin Sullivan/Getty Images)

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Mary Sings - Mary J. Blige sang a soulful rendition of "Lean on Me" during the "We Are One" Inaugural Celebration at the Lincoln Memorial.   (Photo: Mark Ralston/AFP/Getty Images)

Photo By Photo: Mark Ralston/AFP/Getty Images

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Family Affair - President Barack Obama, his wife Michelle Obama and daughters Malia and Sasha look on as U2 performs. (Photo: Mark Wilson/Getty Images)

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Family Affair - President Barack Obama, his wife Michelle Obama and daughters Malia and Sasha look on as U2 performs. (Photo: Mark Wilson/Getty Images)

Bey Belts a Tune - Beyoncé performed at the star-studded concert. (Photo: Justin Sullivan/Getty Images)

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Bey Belts a Tune - Beyoncé performed at the star-studded concert. (Photo: Justin Sullivan/Getty Images)

King's Dream - Martin Luther King III presided over the event, held in the same place his father, Martin Luther King Jr., delivered his "I Have a Dream" speech in 1963. (Photo: Justin Sullivan/Getty Images)

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King's Dream - Martin Luther King III presided over the event, held in the same place his father, Martin Luther King Jr., delivered his "I Have a Dream" speech in 1963. (Photo: Justin Sullivan/Getty Images)

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One Love - Sheryl Crow and will.i.am performed "One Love." (Photo: ROBYN BECK/AFP/Getty Images)

Photo By Photo: ROBYN BECK/AFP/Getty Images

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Higher Ground - Usher joined Stevie Wonder and Shakira for a performance of Wonder's classic, "Higher Ground." (Photo: JEWEL SAMAD/AFP/Getty Images)

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American Pride - Vice president-elect Joe Biden told the crowd, “Look around you. Look at the grace and grandeur that surrounds us and you’ll see the work of American hands.”  (Photo: Justin Sullivan/Getty Images)

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American Pride - Vice president-elect Joe Biden told the crowd, “Look around you. Look at the grace and grandeur that surrounds us and you’ll see the work of American hands.” (Photo: Justin Sullivan/Getty Images)

In Memory of Marian - Queen Latifah shared remarks in memory of famed African-American opera singer Marian Anderson. (Photo: Justin Sullivan/Getty Images)

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In Memory of Marian - Queen Latifah shared remarks in memory of famed African-American opera singer Marian Anderson. (Photo: Justin Sullivan/Getty Images)

Photo By Photo: Justin Sullivan/Getty Images

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First Daughters - President Obama's daughters Malia and Sasha took in the exciting day. (Photo: Robyn BeckAFP/Getty Images)

Photo By Photo: ROBYN BECK/AFP/Getty Images

Denzel Speaks - Denzel Washington was the first celebrity to speak, telling the crowd, “we are all in this together.”(Photo: Chip Somodevilla/Getty Images)

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Denzel Speaks - Denzel Washington was the first celebrity to speak, telling the crowd, “we are all in this together.”(Photo: Chip Somodevilla/Getty Images)

Tiger Talks Sacrifice - Golf great Tiger Woods, the son of a military man, urged the audience to remember the sacrifices of military families.  (Photo: Justin Sullivan/Getty Images)

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Tiger Talks Sacrifice - Golf great Tiger Woods, the son of a military man, urged the audience to remember the sacrifices of military families. (Photo: Justin Sullivan/Getty Images)

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Grand Finale - President-elect Barack Obama addressed a roaring crowd after 90 minutes of high-energy acts such as U2, Mary J. Blige, Usher and Beyoncé.  (Photo: Kevin Mazur/WireImage)

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Grand Finale - President-elect Barack Obama addressed a roaring crowd after 90 minutes of high-energy acts such as U2, Mary J. Blige, Usher and Beyoncé. (Photo: Kevin Mazur/WireImage)

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Farewell - President-elect Obama and his wife and Vice President-elect Joe Biden and his wife, Jill, wave to the crowd. (Photo: Robyn Beck/AFP/Getty Images)

Every Corner - The crowds crammed onto all areas of the grounds of the National Mall to witness the historic show. (Photo: Chip Somodevilla/Getty Images)

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Every Corner - The crowds crammed onto all areas of the grounds of the National Mall to witness the historic show. (Photo: Chip Somodevilla/Getty Images)

Photo By Photo: Chip Somodevilla/Getty Images