The Sharnai is a wind instrument often used in Sindh as an accompaniment of the Dhul. In the past it was also called a Karnai.

The body of the Sharnai is made of wood with an inserted reed sounding device. The instrument has eight holes arranged in a straight line and a ninth hole, called the babiho, positioned below on the back side. There are three varieties of the Sharnai : 1) The Ghazzi is the smallest variety, approximately 6 inches long, and is used for playing the mourning tunes for Muharram. 2) Sharnai is the medium variety, approximately 8 inches long, and the most common form in the Indus Valley. 3) The Mutta, about 10 inches long, is the form most popular in more northern areas of Pakistan such as the Multan region (image and information from Baloch 1988).