American Idol [1]'s series finale ended on Thursday night with a final winner [2], a gorgeous performance from Carrie Underwood [3], and some of the show's biggest success stories hitting the stage together. The ensemble acoustic melody included the talents of Katharine McPhee, Ruben Studdard, Clay Aiken, and — most notably, according to fans on Twitter — Jessica Sanchez. Everyone does an incredible job, but the much-loved season 11 runner-up really lets her voice shine during a moving rendition of "The Prayer." Watch her kill it above, and check out the show's massive, epic finale performance [4]!