Your songs are difficult to ignore, and interfere with the spellcasting or songperforming of your enemies.
BENEFIT
Targets affected by a disruptive song must make concentration checks when using songs, spells or spell-like abilities (DC equals the save DC of the disruptive song plus the level of the song being cast) for 1 round. Targets that avoid the song’s effects avoid this feat’s effect as well.
MP Increase: +1 (a disruptive song costs 1 additional MP more than the actual MP cost of the song.) In addition, the perform check DC increases by +1.