Some musical instruments that are used in traditional Turkish music (classical or folkloric).
From left to right: a clarinet, a ‘davul’ (large drum), a ‘zilli def’ (tambourine with metal jingles) and an ‘ud’ (Middle Eastern lute; oud). The tambourine is used in Karagöz shadow theater too.

Regarding the puppeteer and his crew:
Though Karagöz theatre requires a skilled puppeteer who is capable of controlling the puppets and using different voices, it only requires about four people for a performance that can include dozens of characters.
The puppeteer is called either the ‘Karagözcü’, or ‘hayalî’ (meaning both "imaginary" and "image creator") or ‘hayalbaz’. A single hayalî impersonates every single character in the play by mimicking sounds, talking in different dialects, chanting or singing songs of the character in focus.
An apprentice, called the sandıkkâr(from "sandık", "chest"), assists the puppeteer by handing him the puppets in the correct order and setting up the stage before the show. A singer, or yardak, might sing a song in the prelude, but the yardak is never responsible for voicing a character. The yardak may be accompanied by a dairezen (tambourine player) on a tambourine, and sometimes by a second musician, playing another instrument.

Correspondent: J.M.Criel, Antwerpen.
Sources: ‘Günaydın Anadolu – Tradities van Turkije’ – cataloog Tentoonstelling Hessenhuis/Antwerpen 1988 ;
Mr. Şinasi Çelikkol from Bursa (puppeteer, initiator of the Bursa Karagöz Museum) & Wikipedia.