Requiem( Libris Mortis: The Book of Undead, p. 29)
Your bardic music affects undead creatures.
Perform (any) 8 ranks, Bardic music class feature,
You can extend the effects of your mind-affecting bardic music and virtuoso's performance abilities so that they infl uence even the undead. All bardic music effects on undead creatures have only half the duration they normally would against the living.
Undead are usually immune to mind-infl uencing effects.