*snickers* yes, I no longer pee myself when singing. Very good thing, the people in the front row no longer ask for their money back after performances. Usually I use the bellow and blindness songs on the party members when we're waiting around in safe towns, by telling them ghost stories. The best way I've found to use it against enemies is to make yourself invisible, sneak into the center of the swarm mass and sing... then RUN back to the party before the 60% of those unaffected skin you alive in the 1st 2 rounds. in effect, Farros still runs up, screams and flees just as he did before, but at least now he's not cowering for 15 rounds, heheheh.
You can sometimes let off a curse song before they whoop you to death too, so try to hit them with that 1st to lower their will a bit if you have that ability. Also if any of your party members is a drow who drops darkness on you alot and giggling, scream a blinding/deafening chant at him and stick a kick me sign on his back.