Zulkoon

A zulkoon was a wind musical instrument that functioned like a portable pump organ.

Description
A zulkoon player pumped air into the instrument and through its organ pipes using a foot pump. This produced a droning sound over other notes due to the constant flow of air through the instrument and conferred it a sinister and dramatic sound.

History
Zulkoons were created by the zulkirs of Thay and were used originally to aid in the casting of spells.