Ewan, I don't hear much of a resemblance at all.

https://www.youtube.com/watch?v=gNJ5Sl-x5t8

Could you explain precisely how "Flanders" resembles "Scotland"?

To my ear, "Bonny Glenshee" may be a smidgen closer to "Scotland the Brave," but I can't imagine anyone ever confusing them!

https://www.youtube.com/watch?v=gNJ5Sl-x5t8

Corrigan's "Irishman's Toast" of ca1910, however, hardly differs from "Scotland the Brave."