its probably not beneficial for disco because it will move you to the LOW end of possiblities if any at all along with a significant chance to fail the music check entirely.
If you were 100/100 and got disco'd by a regular satyr, you drop to around 72/72.......ouch.....you arent even in the possibe gain. Even at 120 music, you are dropping to ~90; still a chance to fail the music check.
For other skills however, being disco'd is awesome (carto/magery/lockpicking to name a few).