Thanks Bob, Robert, David, Tommy, Marty, much appreciated.
Marty, here's how the chords and arrangement came about. Around the time I wrote the melody I had recently listened to Tony Hatch talking about how he liked key changes when writing his songs, so in this one I tried moving from D in the verses up to E in the choruses and then back again to D for the next verse, with a final jump to F# for the last chorus. I'm not a formally trained musician, but after a bit of experimentation I got something that sounded good to my ears!
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