So for GEN VII GF has decided to come up with another type to shake the metagame even further (like the fairy type did, a much more welcome change than megaevolutions in my opionions and the fairies we have are not even THAT strong).

What would you do, vp? Remember, you have total freedom on this one as long there is some retcon.

I'll start with the obvious
>Sound Type
>X2 on Water, Fairy, Flying
>x1/2 on Psychic, Ice
>Resists Water, Fairy, Flying
>Weak to Psychic, Ice
>Boomburst, Chatter, Confide, Disarming Voice, Echoed Voice, Growl, Hyper Voice, Metal Sound, Noble Roar, Relic Song, Roar, Round, Screech, Sing, Snore, Supersonic, Uproar are now sound type moves
>Igglybuff/Jigglypuff/Wigglytuff are now SOUND/FAIRY
>Whishmour/Loudred/Exploud are now SOUND
>Chingling/Chimecho are now PSYCHIC/SOUND
>Kricketot/Kricketune are now BUG/SOUND
>Chatot is now SOUND/FLYING
>Petilil/Lilligant are now GRASS/SOUND
>Meloetta two forms are now SOUND/PSYCHIC and SOUND/FIGHTING
>Litleo/Pyroar are now FIRE/SOUND
>Spritzee/Aromatisse are now FAIRY/SOUND
>Noibat/Noivern are now SOUND/DRAGON