Hollie Cavanagh does Dusty Springfield

Hollie Cavanagh starts the British portion of the evening. "I definitely feel like if I don't have people connected with me on this song, I could be in trouble," she says.

"If you can do what you do here, you should stay on this show," Jimmy Iovine tells her.

So let's see if she can take the intimacy of rehearsal to the big stage.

Whatever Hollie's doing different this week, it's working for her....