Harp of Pandemonium

The Harp of Pandemonium is one of the unique magical items sold by the merchant Deidre, who is found in the Adventurer's Mart in the Collector's Edition and Enhanced Edition versions of Baldur's Gate II: Shadows of Amn.

Properties
The Harp of Pandemonium can generate a Pandemonium effect three times per day. All enemies within range must Save vs. Spells or be pushed away from the bard playing it, as well as being Confused for 3 rounds.

In-game Description
"Ravel was a powerful night hag that lived in the city of Sigil. Somehow she angered the Lady of Pain, a powerful godlike figure that rules the city of Sigil.  The Lady of Pain imprisoned Ravel within a magical maze, where the night hag would be trapped for all time.  The  harp was one of the many artifacts that Ravel left behind in Sigil when she was imprisoned."

Trivia

 * The Harp of Pandemonium is an homage to the Planescape setting, specifically being an easter egg to the videogame Planescape: Torment, also by Black Isle. In addition to its referencing the characters Ravel (as well as her fate in PS: T) and the Lady of Pain, not to mention Sigil, the Harp of Pandemonium actually appeared in that very game as a magic item. Called Ravel's Harp of Pandemonium, it had the exact same description and powers seen here.
 * The Harp of Pandemonium would also go on to make an appearance in Neverwinter Nights. Here, it would lose its references to Ravel, and instead be associated with the plane of Pandemonium; its item description in that game reads "Like their namesake plane, these instruments produce shifting, disconsolate tones that seem to penetrate the ear and confuse the senses. When strummed by a talent, these random notes coalesce into fields of pure chaos, turning dedicated enemies into dazed idiots." The Neverwinter Nights version of the harp no longer functions on a daily basis, but instead has 50 charges; it can cast the spells Confusion (at a cost of 2 charges) and Daze (at a cost of 0 charges).