These Four Walls

The recording of this fragile and haunting ballad about losing someone was an emotional experience for the Little Mix girls. "We each passed a mic around talked about our experiences of people we've lost, boyfriends, everything," Leigh-Anne explained to Digital Spy. "Then we ended up writing what we think is the best song we've ever done." Perrie added that the quartet had originally planned to come up with an uptempo track that day and not a ballad.