The Duduk is mainly a solo instrument and is typically played only in West Bulgaria.

The duduk comes in a variety of different keys, and usually measures 25-40 cm long  with six holes.  Unlike the rim-blown kaval or tsafara, the duduk incorporates a fipple to produce sound.  The sound and timbre are
contrasting in the various pitches:  in the lowest pitch, the tones are weak, in the middle register sound is bright and colourful, and in the high register, the tones are sharp, whistling, and not so easily attainable.