Brass music has been popular in that region for a long time--thank the Germans. Is it any surprise that Sousa was Czech?

Moravia is a mountainous region, with a rich tradition of hollars. That may explain why the Pennsylvania Moravians would have "gathered in high places" to do their singing--inside, it would have been deafening!

In searching for Czech and Moravian songs, most I've found have been so simple in shape and underlying harmony as to be deathly dull--"Three Blind Mice" seems a step up. But the area also has a strong gypsy influence from nearby Hungary and Romania, so at least the dance music rocks. And the drinking songs aren't bad, either.

Many of the songs and tunes are in "modal" scales. In fact, some of the flutes play most naturally in Lydian. Two-part singing in thirds is common, which may explain why tunes very often end on the third rather than the tonic.