Banshee!Danny and ghosts paralleling real world supernatural mythos and spirits thought, inspired by @floralflowerpower ‘s banshee post.
A siren, I assumed like Ember and based on her attributes in the show, would have a variety of tones they have specialized to get the specific influence they desire,
and can “exchange” (notice the red music note is switched for a blue fist that later turned green, the green skull had changed places, and blue flame had seemingly disappeared) or change those specialized tones.
And seeing the green fists as well as the more ominous death song above, I wondered about our ghost boy and his more vocal abilities, his ghostly wail.
I thought, what would happen if a banshee, obviously specifically Danny, sang?
Banshees being spirits mostly associated with warning and ominous signs of oncoming death, I wonder if his singing voice, as sirens songs are often emotionally influential given Ember as our example, would put people into mourning or become sorrowful, like how that “in the arms of an angel” animal cruelty commercial made people so upset they couldn’t use that song anymore, in panic and fear to hide away from the focus of song, or a sense of urgency, to act against whatever it is that may be coming. To sing of anguish, dread, and warning.