Elvis Aaron Presley, known as the "King of Rock and Roll", was an American singer and actor who revolutionized popular music by blending blues, country, and gospel. His stage presence and near-perfect pitch made him a cultural icon of the 20th century. Presley's impact extended beyond music, as he's credited with helping to end segregation in the US. He sold an estimated one billion records worldwide, more than any other artist in history. 