Two different types of two-stringed
so.
The one in front is a
so uh, with a sound box
that consists of a polished
coconutshell
of which the front is covered with
buffaloskin;
the one in the back is a
so duang, with a slim wooden sound box
of which the front is covered with
a piece of
snake skin. Both sound boxes
have openings in the back to amplify the resonance of the acoustics.
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