Kowalski's Music Box

• Kowalski's Music Box
• Binds when picked up
• Unique
• Toy
• Use: Emits a soothing tune to all enemy creatures within 30 yards, reducing their range at which they detect enemies. The Music Box lasts for 1 hour until it has to be wound up again. (15 Min Cooldown)
• Requires Level 40
• "Treasured by the bards of Azeroth."

Source

Kowalski's Music Box is a usable item sold by Dazzerian and Crafticus Mindbender in Ashran.

Patch changes

• Patch 6.1.0 (2015-02-24): Kowalski's Music Box now has a 15-minute cooldown (down from 1 hour).
  
• Hotfix (2014-12-18): Kowalski's Music Box should now correctly apply its soothing effect to targets that are not in combat.
  
• Patch 6.0.2 (2014-10-14): Added.
  

External links

• Wowhead
• WoWDB