What is that sound high in the air Murmur of maternal lamentation Who are those hooded hordes swarming
The repetition of "what is" and "who are" in this stanza illuminates a fragmented series of lines, as if working through the an internalized thought process in someone's head. Also the hood imagery includes this obfuscated image that separates the internal from the external, as if the hood is an extension of an individuals cloudy perspective.