Variations on Est-Ce Mars

Sweelinck wrote these 7 variations on a well-known French soldiers song.

I played it as though a group of men were quick-marching lustily along a countryside road, obviously FROM the frontline as they are in high spirits..

The variations, with one exception because of a different time signature, are played in about the same tempo.

At the end the introductory verse, which was initially played on a 4 foot flute, is repeated on the full organ.

I have no idea how Sweelinck himself might have played it, but nobody does, so everyone has to make up his own story. That, at least for me, is one of the joys of playing old music: the composer hardly gave any indication, except for the fact that this is a march is.
So everyone has to use his or her (her or his) own imagination.