Standing in the glass doorway of his spotless office at Warner Chappell’s London HQ, Guy Moot takes a big sip of coffee. Having only recently arrived back in the UK from LA, he explains that he’s currently running on, oh, about two hours’ sleep.

So, no chance to nod off while watching an in-flight movie, we ask?

Let the record show that Moot immediately raises both arms in front of him. The fingers on the end of each hand immediately ...