Harold George Belafonte, Jr. (born March 1, 1927 in New York, New York, United States) is an African-American musician, actor and social activist of Jamaican ancestry. One of the most successful Jamaican musicians in history, he was dubbed the "King of Calypso" for popularizing the Caribbean musical style in the 1950s. Belafonte is perhaps best known for singing the "Banana Boat Song", with its signature lyric "Day-O". Throughout his career, he has been an advocate for civil rights and humanitarian causes.