Madrigal

From Final Fantasy Wiki

Madrigal is a type of song in Final Fantasy XI. There are two madrigals in the game; Sword Madrigal and Blade Madrigal. Both increase Accuracy of all party members within range. Sword Madrigal increases accuracy by a lower amount than Blade Madrigal. The two songs would stack together, but as always, a player may only have 2 songs active and granted by the same bard at any given time.