The performers for next week's American Idol season finale have been announced.
In addition to previously announced performers Alicia Keys and country star Brad Paisley, the lineup includes artists from a wide variety of musical genres -- from heavy metal and pop to rap and R&B -- as well as one beloved Idol alum.
And speaking of Idol alumni, Monday night's episode featured season 5 favorites Taylor Hicks, Paris Bennett, Kellie Pickler and Elliott Yamin, all of whom duetted with the finalists. Paula Abdul also returned as a guest judge, while Randy Jackson came back as a mentor.