With a lot of the songs I have written I can remember, very clearly, where I was, and what I was doing. I can pinpoint it to an exact moment. For Ruby, I was driving to my mum and dad’s house in York. I was listening to Paul McCartney’s Ram and something from that must have inspired me and I began singing the verse [to Ruby].

When I arrived at my parents’ house I started fiddling around on the piano, ...