If any of you have played The Elder Scrolls Skyrim you would have seen/heard about the thu'um which is the use of dragon language for worship or combat.How is this relevant to the Death Song?I hear you ask,all will be revealed my sweet summer child.Firstly,I'll give you an example of a shout from skyrim,before I continue know that thu'um shouts are (most times)composed of 3 words in the dragon language.The fire breath shout is YOL TOOR SHUL meaning fire,inferno and sun respectively,as you learn each word the shout becomes more precise and powerful.An explanation of this would be if reality was a song the thu'um would be like adding words to the chorus,another fun way you can think of this is like console commands.If Ir Halak and Ir Anuk found a way to tap into reality in such a way that they could find these "console commands" of reality so they could create a paracausal death impulse,a "kill all" command if you will.If you are wondering how the sisters do this without killing themselves in the process,they use an oversoul which is the act of separating ones soul from there body and anchoring it elsewhere,such as a throneworld which makes you immortal unless you are killed in your own throneworld.An example of an oversoul would be Crota's oversould(the green-black sun behind him) and the Warpriest's Oculus. Thanks for reading Please excuse any grammar/puntuation errors(english is not my first language).