These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: The Desert Song
Alternate Character Interpretation: Is Azuri really just hypersexualised, petty and manipulative, or an example of the negative effects of colonisation on indigenous peoples, as well as an example of the problems mixed-race people can face during colonialism? Also, was Pierre just holding out until Margot came to Morocco?
Ear Worm: The songs! Once you've heard them, they will never leave your head.
Freud Was Right: The Sabre Song. The fact that the sword symbolises the Red Shadowis even mentioned in the stage directions. As well as the fact that Margot is indecisive about what she wants.
Unfortunate Implications: And how! Where to start? The whole thing. From the Red Shadow actually being a European, to being the best at single combat in "all of Morocco." Plus, the whole "barbaric Muslim/Arab" idea. And the name of the sequence that "Let Love Go", "One Flower Grows Alone In Your Garden" and "One Alone" appear in is "Eastern and Western Love", implying that "Easterners" are all polygamists.
And also, the whole scene before The Song of the Brass Key, when the guard has the speech about "the soldiers of Spain must have diversions" implies that Clementina and co. are basically spoils of war. (They were camp followers).