Petula Clark's producer/songwriter Tony Hatch co-wrote this song with his wife Jackie Trent. Of all the songs that Hatch has written or co-written, this song is Clark's favorite. When we asked her about the song in our 2013 interview
, she said, "It's a bit of a mystery to me, the song. But it's got to be one of my favorites, though I'm not quite sure what it's about. It doesn't matter."
Petula added that when she starred opposite Fred Astaire in the 1968 movie Finian's Rainbow
, he asked her what this song was about, and she didn't have a good answer.