This is NOT a battle class.
Just want to throwing the idea out there.
If possible please add a class that purely plays music. An activity you can do on down time for fun.
-Give the class of abilities to play musical notes.
-Allow to equip different instrument each with unique sound.
-Of course give other players the option to mute musician. If they choose to.
-More feature- like side quest similar to Hildebrand series, playing music in group, musical note, perhaps even concert.
Something all players can enjoy!

Dev please consider this feature in future contents.