A contestant performs with singer Nick Lachey.

Guest panellists Niecy Nash and Jay Pharoah; the chosen contestant performs a duet with Jordin Sparks.

The Guest panelists includeDeRay Davis and Russell Peters. A contestant performs with Nicole Scherzinger.

Guest panellists Yvette Nicole Brown and Bob Saget; the chosen contestant performs with Pat Monahan.

Guest panellists Bob Saget and Finesse Mitchell; a contestant performs with Donny Osmond.

Guest panelists Yvette Nicole Brown and Robin Thicke; one contestant performs with Jesse McCartney.

Guest panelists Joel McHale, Deon Cole and Jeff Dye join Adrienne Houghton. One contestant performs with Adrienne.

The guest panelists are Taye Diggs and DeRay Davis; one contestant performs with Rick Springfield.

The guest panelists are Nicole Byer and Jeff Dye; one contestant performs with Robin Thicke.

The guest panelists are Joel McHale and Niecy Nash; one contestant performs with Katharine McPhee.

A night of holiday cheer kicks off with host Ken Jeong in the first-ever holiday spectacular. Joining Jeong are celebrity panelists Cheryl Hines, Adrienne Bailon-Houghton, Paula Abdul, Nicole Byer and musical superstar Debbie Gibson to help one contestant tell the difference between good and bad singers, without ever hearing them sing a note.

Guest panelists Cheryl Hines and Adrienne Bailon-Houghton; one contestant performs with Jewel.

Guest panelists Joel McHale and Lil Rel Howery; the singer whom the contestant picks will reveal if they are good or bad in a duet .

Guest panelists Kelly Osbourne and Brian Austin Green; chosen contestant performs with Kelly Rowland.

Guest panelists Joel McHale and Alison Brie; the selected singer performs with Ashanti

Guest panelists Loni Love & Jodie Sweetin; chosen contestant performs with Macy Gray.

Guest panelists Mario Cantone & Melissa Peterman; selected singer performs with LeAnn Rimes.

Guest panelists Robin Thicke and Raven Symone; the selected singer performs with Rachel Platten.

Guest panelists Margaret Cho and Rachel Harris; the chosen contestant performs with Shaggy.

Guest panelists Yvette Nicole Brown and Curtis Stone; one contestant performs with Wanya Morris.

Guest panelists Vanessa Lachey and Jim Jeffries; the chosen contestant performs with Kandi Burruss.

Guest panelists JoJo, Drew Carey, Yvette Nicole Brown, Cheryl Hines and Adrienne Houghton; one singer will perform a duet with JoJo.

Guest panelists DeRay Davis and Nikki Glaser; a contestant performs with Lauren Alaina.

The singer whom the contestant picks reveals their skill in a duet performance with Gavin DeGraw.

The singer whom the contestant picks will reveal if they are good or bad in a duet performance with musical superstar Dionne Warwick, resulting in an amazing musical collaboration - or a totally hilarious train wreck.

Romeo, Melissa Peterman and Frankie Muniz; a contestant performs with Adrienne Bailon-Houghton.

Hosted by Ken Jeong, permanent panelists Cheryl Hines and Adrienne Bailon-Houghton and a rotating panel of guest celebrity detectives must help one contestant tell the difference between good and bad singers, without ever hearing them sing a note. With $100,000 on the line, each contestant will attempt to weed out the bad "Secret Voices" from the good, based on a series of clues, interrogation, and lip synch challenges. In the end, the singer whom the contestant picks will reveal if they are good or bad in a duet performance with musical superstar Montell Jordan, resulting in an amazing musical collaboration - or a totally hilarious train wreck.

The singer whom the contestant picks will reveal if they are good or bad in a duet performance with musical superstar Johnny Gill, resulting in an amazing musical collaboration - or a totally hilarious train wreck.

Hosted by Ken Jeong, permanent panelists Cheryl Hines and Adrienne Bailon-Houghton and a rotating panel of guest celebrity detectives must help one contestant tell the difference between good and bad singers, without ever hearing them sing a note. With $100,000 on the line, each contestant will attempt to weed out the bad "Secret Voices" from the good, based on a series of clues, interrogation, and lip synch challenges. In the end, the singer whom the contestant picks will reveal if they are good or bad in a duet performance with musical superstar Carnie Wilson, resulting in an amazing musical collaboration - or a totally hilarious train wreck.

Permanent panelists Cheryl Hines and Adrienne Bailon-Houghton and a rotating panel of guest celebrity detectives must help one contestant tell the difference between good and bad singers, without ever hearing them sing a note. With $100,000 on the line, each contestant will attempt to weed out the bad "Secret Voices" from the good, based on a series of clues, interrogation, and lip synch challenges. In the end, the singer whom the contestant picks will reveal if they are good or bad in a duet performance with musical superstar Michelle Williams, resulting in an amazing musical collaboration - or a totally hilarious train wreck.

Hosted by Ken Jeong, permanent panelists Cheryl Hines and Adrienne Bailon-Houghton and a rotating panel of guest celebrity detectives must help one contestant tell the difference between good and bad singers, without ever hearing them sing a note. With $100,000 on the line, each contestant will attempt to weed out the bad "Secret Voices" from the good, based on a series of clues, interrogation, and lip synch challenges. In the end, the singer whom the contestant picks will reveal if they are good or bad in a duet performance with musical superstar Tyler Hilton, resulting in an amazing musical collaboration - or a totally hilarious train wreck.

Hosted by Ken Jeong, permanent panelists Cheryl Hines and Adrienne Bailon-Houghton and a rotating panel of guest celebrity detectives must help one contestant tell the difference between good and bad singers, without ever hearing them sing a note. With $100,000 on the line, each contestant will attempt to weed out the bad "Secret Voices" from the good, based on a series of clues, interrogation, and lip synch challenges. In the end, the singer whom the contestant picks will reveal if they are good or bad in a duet performance with musical superstar Shawn Stockman, resulting in an amazing musical collaboration - or a totally hilarious train wreck

Hosted by Ken Jeong, permanent panelists Cheryl Hines and Adrienne Bailon-Houghton and a rotating panel of guest celebrity detectives must help one contestant tell the difference between good and bad singers, without ever hearing them sing a note. With $100,000 on the line, each contestant will attempt to weed out the bad "Secret Voices" from the good, based on a series of clues, interrogation, and lip synch challenges. In the end, the singer whom the contestant picks will reveal if they are good or bad in a duet performance with musical duo Maddie & Tae, resulting in an amazing musical collaboration - or a totally hilarious train wreck.

Hosted by Ken Jeong, permanent panelists Cheryl Hines and Adrienne Bailon-Houghton and a rotating panel of guest celebrity detectives must help one contestant tell the difference between good and bad singers, without ever hearing them sing a note. With $100,000 on the line, each contestant will attempt to weed out the bad "Secret Voices" from the good, based on a series of clues, interrogation, and lip synch challenges. In the end, the singer whom the contestant picks will reveal if they are good or bad in a duet performance with musical superstar Chris Kirkpatrick, resulting in an amazing musical collaboration - or a totally hilarious train wreck.