Silver String 2014

Wondrous Item, uncommon, (requires attunement)

Rarity: Uncommon
Category: Wondrous Item
Attunement: Required

These silver wires magically adjust to fit any stringed instrument, making its sound richer and more melodious. You have advantage on Charisma (Performance) checks made when playing the instrument.

Source: Vault of Magic (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details