Irish bouzouki when having a longer scale length. The fifth course is usually either a lowest bass course tuned to C2 or D2 on an instrument with a long scale, or a highest treble course tuned to G4 or A4 on a shorter scale. Luthier Stefan Sobell, who coined the term "cittern" for his modern, mandolin-based instruments, originally used the term for short scale instruments irrespective of the number of their strings, but he now applies "cittern" to all 5 course instruments irrespective of scale length, and "octave mandolin" to all 4 course instruments, leaving out bouzouki entirely. Mandolin-family luthiers producing an
Bouzouki instrument more laborious. To achieve this, manufacturers use different techniques, each one having their own secrets. Many modern instrument have a metal rod or bar (truss-rod) set into a channel in the neck, under the fingerboard, which adds some weight, but increases rigidity, and allows adjustment of the neck should it begin to warp. The Greek bouzouki is a plucked musical instrument of the lute family, called the thabouras or tambouras family. The tambouras has existed in ancient Greece as pandoura, and can be found in various sizes, shapes, depths of body, lengths of neck and number of strings. The