https://www.songwritingmagazine.co.uk/how-i-wrote/enola-gay-omd
“So, Paul was out and I was at his house and I just started writing the chords on the organ and the melody. Once I got those primary ingredients I then had the blueprint to write the song. It’s a typical linear OMD song, it is the same four chords all the way through and it never varies. The verse, the melody, the middle eight, it’s all the same.