The tamboura in comparison with the other musical folk instruments is not as diffused as gadoulka. There are tambouras with the different extent very often in the region of Raslog, Gotse Delchev and others. All tamboura's strings are metallic with different thickness. 040501 - four pairs or altogether 8 strings 040502 - three pairs or altogether 6 strings
Folk orchestras are used in utilizing the six-stringed tamboura, whose strings are with different thickness and are disposed in three groups too. The violin key is written with notes and has a volume from "la" on the little octave still "la" on the second octave.