Photograph of bouzouki.

The three-course bouzouki (trichordo) This is the classical type of bouzouki that was the mainstay of most Rebetiko music. It has fixed frets and it has 6 strings in three pairs. In the lower-pitched (bass) course, the pair consists of a thick wound string and a thin string tuned an octave apart. The conventional modern tuning of the trichordo bouzouki is Dd-aa-dd. This tuning was called the "European tuning" by Markos Vamvakaris, who described several other tunings, or douzenia, in his autobiography. The illustrated bouzouki was made by Karolos Tsakirian of Athens, and is a replica of a trichordo bouzouki made by his grandfather for Markos Vamvakaris and became more famous from Manolis Chiotis. The absence of the heavy mother of pearl ornamentation often seen on modern bouzoukia is typical of bouzoukia of the period. It has tuners for eight strings, but has only six strings, the neck being too narrow for eight. The luthiers of the time often used sets of four tuners on trichordo instruments, as these were more easily available, since they were used on mandolins.^{[citation needed]}

— w:en:Bouzouki#The three-course bouzouki (trichordo)