As fluid as this time last year or by season's end? My recollection is it took them a long time to figure out exactly how they wanted all that to fit together, and that they made numerous changes.
For instance, at this point last year, weren't they doing the "Great Dictator" speech live? Only switching to a pre-recorded version later in the season?
While on the other hand, didn't they add the snare line chanting "it's pro-pa-gan-da" live through small bullhorns only towards the end of the summer?
May as well record the brass and percussion then. Drum corps should be live as much as possible.