The instrument was a pair of drums, made of clay, wood or metal in the form of a hemispherical kettle, with skin stretched over the mouth of it. Kus was played with drumsticks of leather or wood (The leather drumstick was called Daval). Kus usually was carried on horseback, camelback or elephant during the wars to encourage the army. The instrument was also played in many occasions such as festivals, weddings and decamping.
In ancient times, Kus was accompaniment by Karnay (Persian trumpet or horn). Particularly the Persian epic poets Ferdowsi and Nizami for describing the war fields have mentioned to Kus and Karnay in number of entries. Many Persian miniatures paintings show the presence and importance of the Kus and Karnay in the war fields.
According to the Greek historians, drum belonged to Persians, and Plutarch tells of the Iranian warriors at the time of Arsacid dynasty were using Kus as warlike instruments.
Apparently after the introduction of Islam the word Naghghāreh has been used to mention to small-sized kettledrums. It seems that the word Naghghareh comes from the Arabic verb Naghr- that means to strike and to beat. A few poets have mentioned the name Naghghareh such as the great Persian mystic poet Molana Jalal al-Din Rumi.
Kus-e-Ashkebus: Kus attributed to Ashkebus, famous commander of King Afrasiyab mentioned in masterpiece Shahnameh of the famous poet of Persia, Ferdosi.
Kus-e-dolat: Kettledrum to be played during the victories.
Kus-e-id: Kettledrum to be played during id (festival).