At the end of this acoustic song you can hear singer Kieran Shudall saying, "She texted me during that."
"I'd put my phone on the side for the song, which was a one-take thing," Shudall explained to the Independent laughing. "And my girlfriend - who the song is about - was texting me so my phone was vibrating through the whole thing and I was like 'why would you do this to me now?'"
"We kept it in there because it makes it a bit personal," he added. "I've always loved those Beatles records where you can hear Ringo shouting in the background and stuff. I think sometimes you want to make the listener feel like they're in the studio with you."