Other veterans on hand includeRuben Studdard, Fantasia, Taylor Hicks, Jordin Sparks, David Cook, Kris Allen, Candice Glover, Scotty McCreery, Lee DeWyze, Ace Young, Clay Aiken, Constantine Maroulis, Katharine McPhee, Kellie Pickler, Tamyra Gray, Sanjaya, Kimberly Locke and more.