Gibb Sahib write:

Sure! It's a familiar source in these discussions, but flies under the radar a bit due to the uncommon title. A few subsequent publications, which I can only imagine are derivative of the _Once a Week_ piece, parse "Valparaiso" and "Round the Horn" as two separate items.

Understandable, given the syntax. But your argument that it's one song makes sense. As I say, it's worth a mention. Thank you!