I’ve been busy writing. And just when I thought I’d finished:
I got plunged into rewrites:
Argh! Normal service will resume shortly.
(The picture at the top is not from the actual book, don’t worry!)
Republic or Death
Site for journalist Alex Marshall's book about national anthems – their history, stories and meaning – including audio guide
Republic or Death 
Nkosi sikelel … definitely echoes a French song by Jean-Baptiste Lully, Au clair de la lune.
I’ll give it a listen, thanks Lars, although I prefer to give Enoch Sontonga credit – a poor black man in 1890s South Africa didn’t listen to much music except his own…!