A group of instruments, from top to bottom: Çifte kudum or a set of drums (Wikipedia: Kudüm is one of the most fundamental rhythm instruments in classical Turkish music. The person playing it is called kudümzen. It is among ney, rebap, and halile as one of the four main instruments in Mevlevi music. It consists of a pair of small, hemispherical drums. Traditionally kudüm was played in religious ceremonies; in a secular context, like in mehter music, its slightly bigger cousin nakkare is played.), Çalpara, or castanets, a rebab (Wikipedia: The rebab (Arabic: ربابة‎‎, variously spelled rebap, rabab, rebeb, rababa and rabeba, also known as جوزه jawza or joza in Iraq) is a type of a bowed string instrument so named no later than the 8th century and spread via Islamic trading routes over much of North Africa, the Middle East, parts of Europe, and the Far East. The bowed variety often has a spike at the bottom to rest on the ground and is thus called a spike fiddle in certain areas, but plucked versions like the kabuli rebab (sometimes referred to as the robab or rubab) also exist.) and a ney.