Off-topic from the music, but are there any plans for any non-magic uses of aether, nether, and abyssal (assuming abyssal abilities going to be implemented in the future)?
Additionally, in most fantasy settings there is aura for the physical type users and mana for magic type. Disregard this if you're not planning on introducing aura, but if you are planning on introducing aura, maybe the nature of the aura can be tainted by aether, nether, or abyssal forming new types of abilities that primarily do the damage type of the corresponding corruption.