Melodic Chain

Melodic Chain is an enchanted elven chain armor +3. It offers an armor class of 2, but this can only be worn by bards. This armor gives the same penalties to Thieving Abilities as Elven Chainmail Armor, but as it can only be worn by bards and they can only pick pockets, the -20% penalty to that thieving ability is worth mentioning. This item appears in Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition. The armor can be found on the Planar Prison which can be accessed during the side-quest: Rescue Raelis and Haer'Dalis from the Planar Prison. It's not known by whom or what this item is dropped, or where it can be found.

In-game description
"The Bards of Melody were a small band of half-elf bardic warriors who entertained and defended scattered elven communities throughout Calimshan. Enchantments allowed only minstrels to wear their armor, the magical links sliding together to produce beautiful melodies as they danced or fought. Unfortunately the Bards of Melody were disbanded hundreds of years ago, and the secret of 'playing' the armor faded with them."