Ego

专辑介绍："Ego" is a song recorded by American R&B singer Beyoncé Knowles for the deluxe edition of her third studio album I Am... Sasha Fierce (2008). The song was sent to urban radio in the United States on May 19, 2010, as the album's third urban single and fifth overall single. The song was composed by Elvis Williams, Harold Lilly, and Knowles. "Ego" was officially remixed with additional vocals from hip hop artist, Kanye West. Initially planned to be released in January 2010 as the second urban single in the US along with the third international single "Halo", the release of "Ego" was canceled and replaced by "Diva". "Ego" was later serviced as the third urban single, and fifth overall single in the US on May 19, 2009 alongside the fourth international single "Sweet Dreams".