Tzouras is a traditional musical instrument. 
It looks like a sack that encloses with a drawstring. 
They are mainly 3 strings with tuning RE LA RE in a pair of strings and more rarely 4 strings 
with tuning RE LA FA DO also in pairs. It is played with a pen and belongs to the Lute family.
 It is mainly made in 2 ways. Carved from a piece of wood is dug to create the speaker, 
or with daggers where the speaker is pear-shaped and consists of thin surfaces of wood 
which are glued together like the bouzouki, the mandolin, the lute, etc. musical instruments.