Did you know that the audio was actually recorded in a sound studio? According to Riefenstahl, the film cameras hand cranked motors so the footage would speed up and slow down from time to time, and unfortunately the original audio wasn’t synced with the footage taken. So the Musikzug der Leibstandarte performed all the marching music in the parade sequence whilst conducted by Hermann Müller-John, but what I’ve heard is that Müller-John couldn’t conduct the music that it would be synced to the film. So, Riefenstahl herself took place in Müller-John because she knew the film at heart and conducted the Leibstandarte band playing Badenweiler marsch. Also the cheering was also made in a sound studio by Riefenstahl and a couple of friends and workers.
The Badenweiler Marsch or Badonviller-Marsch is from WW1 and Private Hitler loved it as he had participated in WW1 and also received there the Iron Cross 2nd & 1st Class. I guess he also favoured also a certain label of Vine is this Vine now also historicaly doomed?
It's the same situation what Adolf Hitler did with swastika, in entire world, people remember this symbol, like something horrible and disgusting, but in some country's how Japan, majority people remember as a Buddhist symbol who represent peace and prosperity.