(Photo by Frazer Harrison/Getty Images)

Listen to Simon Cowell’s farewell speech with a performance of “Together We Are One” from previous winners [lastfm]Kelly Clarkson[/lastfm], [lastfm]Ruben Studdard[/lastfm], [lastfm]Fantasia[/lastfm], [lastfm]Carrie Underwood[/lastfm], [lastfm]Jordin Sparks[/lastfm], [lastfm]Taylor Hicks[/lastfm] and [lastfm]Kris Allen[/lastfm].