Spanky
[13] Hero
Flashbacks to Final Fantasy IV when Edward the bard would hide during battle anytime his HP got too low. That fucking guy...I think the series could use a bard like character.
But being serious, I think a bard could be a possibility. I mean, this series has gotten more and more fantastical weapons with each new game; I don't see how a musical instrument would be a stretch at this rate.
I've never played Monster Hunter so I'm not familiar with the example you used, but I do get the concept. It'd be interesting to have a character that incorporates music/musical instruments into their attacks and stuff. I'm not sure how exactly this idea would be executed though. Would the musical instrument be used to smack people around or would the music itself be a weapon, or both???