Abi Alton, Tamera Foster, Melanie McCabe,Relly Clarke, Hannah Barrett and Jade Richards were those chosen by the former Pussycat Doll in the new look Bootcamp.
Nicole with her top six girls
The episode included plenty of tears after the format had been revised to include a game of musical chairs, whereby the acts picked to go through to the next round were not safe until all contestants had sung, and could be ousted from their seat at any moment.
A total of two dozen wannabes are bidding for a place in the final 12 who will be part of the live finals over the coming weeks on the ITV show.
Viewers also learned which mentors will be on hand for the judges as they guide their performers through the next stage of the process.
Nicole with the girls category will be helped by Mary J Blige, Gary (groups) is joined by Olly Murs, Sharon (over 25s) enlists Robbie Williams and Louis (boys) is joined by Nicole Appleton, Shane Filan and Sinitta.