You can increase the power of your songs, causing them to deal more damage.
All variable, numeric effects of an empowered song are increased by half including bonuses to those dice rolls. Saving throws and opposed rolls are not affected, nor are songs without random variables.
MP Increase: +2 (an empowered song costs 2 additional MP more than the actual MP cost of the song.) In addition, the perform check DC increases by +2.