Interviewees: Ruben Studdard as Himself | Adam Lambert as Himself | Carrie Underwood as Herself | Chris Daughtry as Himself | Jennifer Hudson as Herself | Kelly Clarkson as Herself | Nigel Lythgoe as Himself | Trish Kinane as Herself | Simon Fuller as Himself | Cécile Frot-Coutaz as Herself | Simon Cowell as Himself | Patrick Lynn as Himself | Wylleen May as Himself | Randy Jackson (1) as Himself | Paula Abdul as Herself | Ken Warwick as Himself | Nikki Boella as Herself | Justin Guarini as Himself | David Goffin as Himself | Rickey Minor as Himself | Fantasia Barrino as Herself | Charles Boyd as Himself | Jordin Sparks as Herself | Clive Davis (1) as Himself | Taylor Hicks as Himself | Scotty McCreery as Himself | David Cook (3) as Himself | Michael Orland as Himself | Caleb Johnson as Himself | Kieran Healy as Himself | Joe Willis as Himself | Steven Tyler as Himself

Guest Stars: Ruben Studdard as Himself | Taylor Hicks as Himself | Nick Fradiani as Himself | Kanye West as Himself | Kim Kardashian as Herself

Guest Stars: Kris Allen as Himself | Lee Dewyze as Himself

Guest Stars: Clay Aiken as Himself

Guest Stars: Kris Allen as Himself | Ruben Studdard as Himself | Clay Aiken as Himself

Guest Stars: Ruben Studdard as Himself | Clay Aiken as Himself

Guest Stars: Lee Dewyze as Himself

Guest Stars: Jimmy Kimmel as Himself

Musical Guests: Ruben Studdard as Himself | Fantasia Barrino as Herself | Scotty McCreery as Himself | Lauren Alaina as Herself | Caleb Johnson as Himself | Nick Fradiani as Himself

Musical Guests: Kellie Pickler as Herself | Haley Reinhart as Herself | Chris Daughtry as Himself | David Cook (3) as Himself | Jordin Sparks as Herself | Constantine Maroulis as Himself

Guest Stars: Kelly Clarkson as Herself

Songs: Kelly Clarkson -- Piece by Piece

Musical Guests: Demi Lovato as Herself

Songs: Demi Lovato -- Confident, Harry Connick, Jr. -- I Do Like We Do, Demi Lovato -- Stone Cold

Musical Guests: Nick Fradiani as Himself

Songs: Nick Fradiani -- Get You Home

Musical Guests: Adam Lambert as Himself | Jussie Smollett as Himself | Yazz The Greatest as Himself

Songs: Adam Lambert -- Mad World, Adam Lambert -- Welcome to the Show

Guest Stars: Steve Van Zandt as Himself | Sia as Herself |

Musical Guests: David Cook (3) as Himself | Katharine McPhee as Herself

Songs: Sia -- Cheap Thrills, David Cook (3) -- Heartbeat, Katharine McPhee -- Over the Rainbow

Guest Stars: Brian Dunkleman as Himself | John Cena as Himself | Randy Jackson (1) as Himself | Paula Abdul as Herself | Simon Cowell as Himself |

Musical Guests: David Archuleta as Himself | Kara DioGuardi as Herself | Colton Dixon as Himself | Justin Guarini as Himself | Jordin Sparks as Herself | Kimberley Locke as Herself | Tamyra Gray as Herself | Allison Iraheta as Herself | Pia Toscano as Herself | Kelly Clarkson as Herself | Bo Bice as Himself | Caleb Johnson as Himself | Constantine Maroulis as Himself | James Durbin as Himself | Chris Daughtry as Himself | Carrie Underwood as Herself | Diana DeGarmo as Herself | Skylar Laine as Herself | Kree Harrison as Herself | Bucky Covington as Himself | Ace Young as Himself | Lauren Alaina as Herself | Kellie Pickler as Herself | Scotty McCreery as Himself | Katharine McPhee as Herself | Casey James as Himself | Carly Smithson as Herself | Clay Aiken as Himself | Ruben Studdard as Himself | Amber Holcomb as Herself | Jessica Sanchez as Herself | Jennifer Hudson as Herself | Fantasia Barrino as Herself | LaToya London as Herself | Brandon Rogers as Himself | Clark Beckham as Himself | George Huff as Himself | Danny Gokey as Himself | Elliott Yamin as Himself | Taylor Hicks as Himself | Joshua Ledet as Himself | Candice Glover as Herself | Melinda Doolittle as Herself | Phillip Phillips as Himself | Lee Dewyze as Himself | Nick Fradiani as Himself | David Cook (3) as Himself | Kris Allen as Himself | William Hung as Himself

Songs: Kimberley Locke -- 8th World Wonder, Jennifer Lopez -- Ain't Your Mama, Jennifer Lopez -- Let's Get Loud, Jordin Sparks -- No Air, Jennifer Hudson -- Remember the Music, Carrie Underwood -- Something in the Water, Colton Dixon -- Through All of It, Chris Daughtry -- Torches, Fantasia Barrino -- Ugly