Ottoman Classical Music played on the tanbur that has a marked neck...the instrument is central to this music. The marks on its neck give the names of each note. Vocalists train with a teacher playing this instrument. There are 34 sounds/ octave in the first octave. There are many frets on the tanbur neck. Most songs are played on the first pair of strings. Byzantine music could be played on the tanbur as well....which connects these two musical realms.