The 24-year-old rising star - whose real name is Sophie Frances Cooke - jumped straight into working the renowned producer shortly after he spent time with Adele, 28, getting her chart-topping single "Hello" together, reported Contactmusic.
"He did it (Adele's song) not long after I did that session with him. I wrote the chorus to the song before the session because I thought, 'Oh my god this is Greg Kurstin!' I felt like I had to go in with an idea and one that I think is OK and that he would like.
Disclaimer: No Business Standard Journalist was involved in creation of this content