Robin Thicke opens the show alongside Group A's Ant, Paparazzo, and Coral. Then, Group A serenades the audience with some of the Rat Pack's most iconic classics, including "Luck Be A Lady," "Fever," "That's Amore," and "My Way!" Two of these headliners move on to the lucky six at the end of the night but not before an epic Battle Royale. (thetvdb.com)