Long story short: my world has a magic system that runs on sound- music, your voice enc -and my main head Goddess created the world through song after driving away the Darkness with her Light. Said Darkness is my villain, who has come back every cycle only to be temporarily driven away each time. Blah blah blah.
The only names I can think of are things like Dissonance, Discord, Static... I want something music themed (since everything is music themed in this game), but I want it to sound like something a musician would find unpleasant or unnerving.