Contestants from Group A perform hits like "SexyBack," "Just Give Me a Reason," "The Door," "La Bamba" and "Mad World."

Group A channels their inner fairytale by performing songs from or inspired by the "Shrek" movie franchise.

It's "Rat Pack Night" on The Masked Singer! Get ready for The Masked Singer's resident crooner, Robin Thicke, to Fly You To The Moon when he opens the show with the classic alongside Group A's Ant, Paparazzo and Coral. This evening's tribute to the Rat Pack has even more action than a Vegas casino! Group A will swoon, sing and serenade the audience with some of the Rat Pack's most iconic classics including, "Luck Be A Lady," "Fever," "That's Amore" and "My Way!"

Five new masks appear as the Voices of Olympus; contestants perform showstopping renditions of "I Believe In a Thing Called Love," "Bad Blood," "Rewrite the Stars," "Espresso" and "Saving All My Love For You."

The panelists transform into ghost busting detectives along with an iconic visit from an original Ghostbuster, Ernie Hudson! Group B ain't afraid of no ghosts! They bring the house down with amazing performances of "(Don't Fear) The Reaper," "Disturbia," "Cleanin' Up The Town," and "Radioactive" before one celebrity must reveal themselves.

The Group B finalists perform "Save a Horse (Ride a Cowboy), and renditions of "Here You Come Again," "Take Me Home, Country Roads" and "Something in the Water."

The celebrities deliver astounding performances of "Hot To Go," "Jump Around," "Roxanne," "Let's Get Loud," and "Unwell" before one celebrity must reveal themselves.

Paying tribute to boy bands; contestants perform iconic boy band classics like "Tearin' Up My Heart," "Poison," "Step By Step," and "I Swear."

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