@mikemearls if you were to challenge a devil to a fiddle contest, what would his Performance bonus be?
— Wait…What? (@davoerlo) March 9, 2017
Congrats to today's winner of D&D. Folk lore suggests devils have an affinity for fiddles, so I'd say proficiency + Dex #wotcstaff https://t.co/h6hMHFNpEq
— Mike Mearls (@mikemearls) March 9, 2017
I would go with proficiency plus CHA unless the devil in question has claws instead of hands. Then it would roll at Disadvantage.