beta
So, since ml is 100% the demonic Soultan Azathoth, basically the creator of the universe, the flute part (in which he said her voice is better than a flute) was a reference to the fact that Azathoth is asleep and is kept in that state by other amorphous entities which play the flutes. If the flutes stop, he will wake up and if he wakes up, the whole world will end.
This will happen because he "generates" worlds through his dreams and he does so randomly, that's why he is called "the idiot blind God", because he represents chaos and randomness. The universe after all IS believed to be random and chaotic.