Level: Brd 2, Sor/Wiz 2
Components: V, S, F
Casting Time: 1 action
Range: Touch
Target: Weapon touched
Duration: 1 round/level
Saving Throw: Will negates (harmless, object)
Spell Resistance: Yes (harmless, object)

Bladesong makes a bladed weapon emit magical music in combat. Any round that the weapon is used in melee combat, this spell allows the wielder to make a single, additional touch attack with the sword as a free action. The attack uses the wielder's normal attack bonus with that weapon but inflicts no damage. Instead, anyone successfully touched by the weapon in this way is dazed for one round. Dazed characters cannot take actions but can defend themselves normally.

Focus: The weapon.

Bladesong is from WotC