Cymatic Blade

You hum or whistle a musical note to the weapon used in the spell’s casting to make it vibrate at that pitch. The caster then make a melee attack with the weapon against one creature within 5 feet of you. On a hit, the target suffers the weapon attack’s normal effects and as the weapon touches the target a metallic crash bursts out for 200 ft. All creatures within 10 ft of the target must make a constitution saving throw. If successful the creature suffers nothing more than a ringing in the ears. On a failed saving throw the creature is disoriented from the blasting sound and has disadvantage on its next attack. The caster automatically succeeds the saving throw.

The weapon used determines the sound made by the spell. A melee weapon causing slashing damage produces a sound like a cymbal, a melee weapon causing bludgeoning damage produces the sound of a large bell or gong, and a melee weapon causing piercing damage produces a high pitch chime.