A brand-new masked bunch of celebrity singers face off against one another in dazzling costumes.

Meet the all-new celebrity contestants in Group B!

Contestants return for the Group A playoffs and their second performances.

The contestants return for the Group B playoffs and their second performances of the season.

The final group of celebrity contestants take the stage for their first performances.

The "Group C" contestants return for their second performances of the season.

The 3 remaining singers from Group A take the stage for their final chance at the Super 6. The bottom 2 singers face off in a Smackdown to see who advances and who is unmasked.

The remaining 4 singers from Group B compete for a chance to advance, but with room for only 2 in the Super Six, 2 must be unmasked.

The final 3 singers from Group C compete for the final 2 spots in the Super 6. Guest panelist Jay Pharoah.

Finalists from all 3 groups come together for the semi-finals. Three singers are unmasked.

The final three singers perform never-before-heard holiday songs, with all-new animated clues; the already unmasked celebrities join together to perform their favorite holiday jingles.

A look back at the best moments and performances from Season 4.

The three finalists perform one last time before all are unmasked and one singer takes home the trophy.