The 2009 Nobel Peace Prize was awarded to U.S. President Barack Obama "for his extraordinary efforts to strengthen international diplomacy and cooperation between people." The Norwegian Nobel Committee announced the award on October 9, 2009, citing Obama's promotion of nuclear nonproliferation and a "new climate" in international relations fostered by Obama, especially in reaching out to the Muslim world.

Obama is the fourth U.S. President to be awarded the Nobel Peace Prize, after Theodore Roosevelt (1906) and Woodrow Wilson (1919)—both of whom received the award during their terms—and Jimmy Carter (2002), who received the award 21 years after leaving office. In addition, then-sitting Vice President Charles Dawes was a co-winner with Austen Chamberlain (1925), and former Vice President Al Gore was a co-winner with the U.N.'s Intergovernmental Panel on Climate Change (2007)

Obama is the first U.S. president to receive the award during his first year in office (at eight and a half months, after being nominated less than two weeks in office), although several other world leaders were awarded in the year following their election to national office, including Óscar Arias (1987) and Aung San Suu Kyi (1991).

The Nobel Peace Prize (Norwegian and Swedish: Nobels fredspris) is one of the five Nobel Prizes bequeathed by the Swedish industrialist and inventor Alfred Nobel, along with the prizes in Chemistry, Physics, Physiology or Medicine, and Literature. It is awarded to those who have "done the most or the best work for fraternity between nations, for the abolition or reduction of standing armies and for the holding and promotion of peace congresses."

Per Alfred Nobel's will, the recipient is selected by the Norwegian Nobel Committee, a 5-member committee appointed by the Parliament of Norway. Since 1990, the prize is awarded in Oslo City Hall on 10 December each year. The prize was formerly awarded in the Atrium of the University of Oslo Faculty of Law (1947–89), the Norwegian Nobel Institute (1905–46) and the Parliament (1901–04).

According to Nobel's will, the Peace Prize shall be awarded to the person who "shall have done the most or the best work for fraternity between nations, for the abolition or reduction of standing armies and for the holding and promotion of peace congresses."

Under the title of Peace Prize, the following prizes are awarded among others:

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.

Esperanza Spalding (born October 18, 1984) is an American multi-instrumentalist best known as a jazz bassist and singer, who draws upon many genres in her own compositions. In 2011, she won the Grammy Award for Best New Artist at the 53rd Grammy Awards, making her the first jazz artist to win the award.

Spalding grew up in the King neighborhood of Portland, Oregon, a neighborhood she describes as "ghetto" and "pretty scary". Her mother raised her and her brother as a single parent. Spalding has a diverse ethnic background. Her father is African-American and her mother is of Welsh, Native American, and Hispanic descent. She also has an interest in the music of other cultures, including that of Brazil, commenting, "With Portuguese songs, the phrasing of the melody is intrinsically linked with the language, and it's beautiful."

Her mother shares Spalding's interest in music, having nearly become a touring singer herself. But while Spalding cites her mother as a powerful influence who encouraged her musical expansion, she attributes her inspiration for pursuing a life in music to watching classical cellist Yo-Yo Ma perform on an episode of Mister Rogers' Neighborhood when she was four.