The inauguration of Barack Obama as the 44th President of the United States took place on Tuesday, January 20, 2009. The inauguration, which set a record attendance for any event held in Washington, D.C., marked the commencement of the four-year term of Barack Obama as President and Joe Biden as Vice President. Based on the combined attendance numbers, television viewership, and Internet traffic, it was among the most-observed events ever by the global audience.

"A New Birth of Freedom", a phrase from the Gettysburg Address, served as the inaugural theme to commemorate the 200th anniversary of the birth year of Abraham Lincoln. In his speeches to the crowds, Obama referred to ideals expressed by Lincoln about renewal, continuity and national unity. Obama mentioned these ideals in his speech to stress the need for shared sacrifice and a new sense of responsibility to answer America's challenges at home and abroad.

Obama and others paid homage to Lincoln in the form of tributes and references during several of the events, starting with a commemorative train tour from Philadelphia, Pennsylvania to Washington, D.C. on January 17, 2009. The inaugural events held in Washington, D.C. from January 18 to January 21, 2009 included concerts, a national day of community service on Martin Luther King, Jr. Day, the swearing-in ceremony, luncheon and parade, inaugural balls, and the interfaith inaugural prayer service. The presidential oath as administered to Obama during his swearing-in ceremony on January 20 strayed slightly from the oath of office prescribed in the United States Constitution, which led to its re‑administration the next evening.

Barack Hussein Obama II (ⁱ/bəˈrɑːk huːˈseɪn oʊˈbɑːmə/; born August 4, 1961) is the 44th and current President of the United States. He is the first African American to hold the office. In January 2005, Obama was sworn in as a U.S. Senator in the state of Illinois. He would hold this office until November 2008, when he resigned following his victory in the 2008 presidential election.

Born in Honolulu, Hawaii, Obama is a graduate of Columbia University and Harvard Law School, where he was the president of the Harvard Law Review. He was a community organizer in Chicago before earning his law degree. He worked as a civil rights attorney in Chicago and taught constitutional law at the University of Chicago Law School from 1992 to 2004. He served three terms representing the 13th District in the Illinois Senate from 1997 to 2004.

Following an unsuccessful bid against the Democratic incumbent for a seat in the United States House of Representatives in 2000, Obama ran for the United States Senate in 2004. Several events brought him to national attention during the campaign, including his victory in the March 2004 Illinois Democratic primary for the Senate election and his keynote address at the Democratic National Convention in July 2004. He won election to the U.S. Senate in Illinois in November 2004. His presidential campaign began in February 2007, and after a close campaign in the 2008 Democratic Party presidential primaries against Hillary Rodham Clinton, he won his party's nomination. In the 2008 presidential election, he defeated Republican nominee John McCain, and was inaugurated as president on January 20, 2009. Nine months later, Obama was named the 2009 Nobel Peace Prize laureate. In April 2011, he announced that he would be running for re-election in 2012.

Aretha Louise Franklin (born March 25, 1942) is an American musician, singer, songwriter, and pianist. In a recording career that has spanned over half a century, Franklin's repertoire has included gospel, jazz, blues, R&B, pop, rock and funk. Franklin is known as one of the most important popularizers of the soul music genre and is referred to as the Queen of Soul, a title she was given early in her career. Franklin, the daughter of prominent Baptist minister and activist C. L. Franklin, began her singing career singing in her father's church at the age of ten and started recording four years later. After several years in the gospel circuit and with her father's blessing, she formed a secular pop music career at the age of eighteen, signing with Columbia Records, where she was branded by its CEO John Hammond as his most important act since Billie Holiday. Franklin's Columbia period wasn't as successful as hoped and in late 1966, Franklin switched over to Atlantic Records, where she began recording a string of popular hits including "I Never Loved a Man (The Way I Love You)", "(You Make Me Feel Like) A Natural Woman", "Think", "Chain of Fools" and what later became her signature song, "Respect".