Disclaimer: Balancing has not been taken into account yet. Brainstorming is the main focus here.
Character: Taiko Snare
Main Weapon: Broadsword (Though unlike the rest of the chars his weapon /needs/ to be a specific one)
Stats: Normal HP, normal WP, high ATK, high DEF, low SPD
Abilities:
Dragon Slash - deals extra damage to dragons.
Cheer - restores 1 WP to party member.
Bluntedge - deals less damage but may inflict Daze.
Courage - inflicts Fearless on party member, cures Fear.
Tapdance - a beautiful performance that earns extra tickets after the battle.
Soundblast - minor air damage, inflicts Deaf on an enemy
Ventrilotaunt - imagine Provoke if you made it look like another party member used it.
Blast Opera (Overdrive)- inflicts major Air damage on all enemies (and Deaf?).
Special: Immunity to Deaf, constant Fearless
!NOTES!
Taiko's sword is specially modified to mimic his old sound abilities - this is how Soundblast and Blast Opera both manage to work with present-day Knight Taiko. Just for clarification.
Fear causes the target to automatically Guard each turn. Fearless creates an immunity to fear until it wears off.
Deaf causes the target to be immune to audial attacks - Roar, Cheer, Taunts, etc.
Tickets are the currency in-game. They will be awarded at the end of each battle like gil or such.
Overdrives are the last moves characters learn as they level up. They're special attacks that aren't normally available - I am sure limit breaks are not new to you.
Alsooo I'd have invented a Sound element for some of these attacks of sound wasn't just air and everything.