Discordance
From The World of Dreams Manual
Discordance
Trained By: Bard
Title: Bard
To discord a creature you must have an instrument in your bag. You will need to pass a Musicianship Skill Check as well as the Discordance skill check.
Some monsters are easier to discord than others. The beastiary will show the general difficulty level for trying to discord the target creature.
If you are successful at discording the creature, its combat skills will be temporarily decreased. This also lowers the difficulty for provoking and pacifying the creature.