Dragonsong( Draconomicon, p. 105)
Your song or poetics echo the power of the dragonsong, an ancient style of vocal performance created by dragons in the distant past.
Knowledge (arcana) 4 ranks, Perform 6 ranks, Speak Language (Draconic) 1 ranks, CHA 13,
You gain a +2 bonus on Perform checks involving song, poetics, or any other verbal or spoken form of performance. In addition, the DC of any saving throw required by mind-affecting effects based on your song or poetics (such as bardic music) is increased by +2.