“It’s about being single and horny. You’re wanting to do something with someone new but you’re still heartbroken from a break-up… which is actually one of my favourite emotions to write about! The song started out with me and Fred Gibson fooling around with Jack [Patterson, bassist in Clean Bandit] on keys, just seeing what we come up with. It was actually a mistake. It was meant to go, ‘I wanna f*ck-uck-uck’. But Fred did something wrong on the computer and it skipped and went ‘woo-woo-woo,’ so we just went with it! It was a proper fun song to make because Grace, who is just as naughty as me when it comes to lyrics, was like, ‘Let’s make it about masturbation!’ So that’s basically what it’s about. Fred Gibson was using Mark Ronson’s studio in London at the time, so we wrote it there. I’ve done a few things with Clean Bandit now. I did "Baby" as well, which was their single after "Diamond." I wrote that with Marina from Marina and the Diamonds. We’ve done a bunch of other stuff too, which will hopefully come out soon.”

“I really, really respect those girls, especially Perrie, for being so brave with this song. Even though we didn’t say who it was about, everyone knew. She really took that in her stride and used her pain for something positive, almost sacrificing herself for the good of all women around the world. I had got the girls to fill in a really deep questionnaire about the worst things that’d happened to them, what made them feel insecure, and a million other questions. I would read them every night before bed and that really helped to channel them.

"That song was written through my anger at what she’d been through, and to be fair, what we’ve all been through. I remember writing it in L.A. at Trevor Horn’s house, an amazing songwriter who did all Seal’s stuff. It came so quickly because the lyrics were real. It was literally what happened. It was such a beautiful experience to be able to put someone’s pain into something so positive and make people feel empowered. It felt like justice had been served. There’s really nothing like writing a song for an artist that is an absolute depiction of what they’re going through at the time. It doesn’t come around very often because it’s not every day that you’ve got so much drama going on in your life. So, when artists are going through some real sh*t and you write about that specific thing, it always works.”

“You know what’s crazy? Before I got into that session with Jess, we became really good friends. I was always a massive fan of her and when we first met I was nervous because I just think she’s incredible. She’s Jess Glynne, you know what I mean? We were both going through a break up and would speak to each other late at night on the phone, talking about such stupid stuff and laughing. She was just such an amazing comfort to me and so going into that session, I already knew what I wanted to write about. It was more about our friendship as opposed to what we were going through. She was really there for me during that time. I remember when the song was nearly finished, she walked in with her A&R and they both started crying. It was so cute. Then soon everyone was crying and I was like, ‘That’s great! That’s what you want!’ It was a beautiful song to write. I wrote it with Starsmith and Electric and another amazing guy. It was a very emotional session.”

“Oh, I love that song! It was written with Mabel, who was going through such a bad break-up. It was really sad. I remember adopting the big sister position that day. And when girls come to me like that, it makes me really angry and I just wanna write something that’ll make them feel better, empower them, and turn the tables on whoever hurt them and f*cked up their life. So, that’s straight away what we decided we’d do. We’d ‘show him,' basically. Steve [Mac] came up with those amazing chords, and I knew I wanted to make a chorus that was really simple and basically like a chant, quite hypnotic. I love the pre-chorus. I love its weird melody. I remember singing it on the mic and Mabel thought the pre-chorus was amazing, too. She’s a proper sweet girl and so open-minded, so it was all really easy.”

“I produced this! And I'm really proud of that production credit when I look on Spotify and see it. When I started becoming more confident in myself in the studio and trusting that I could produce, it was kind of like a relief. I knew that I was in control and could do what I love. It was amazing. Anyway, "Think About Us" is that feeling when you’re at home waiting for your boyfriend to come back and you’re thinking, ‘You’d better not be talking to no girls in the club. You’d better be thinking about what’s at home.’ That fear that your boyfriend is out doing something else, and you’re just praying that in that moment he thinks about you and him. All of the girls were in relationships, so I was thinking about that fear that we all get.”