I'll begin. To make a violin we needsomething called a sound box. It's often the largest partof a string instrument and it's made of a materialthat vibrates easily. The sound box of a violinis ...

Without the column seen on modern harps, they could not support much string tension. Between 700-1000 AD, frame harps appeared in western Europe, which had between 10 and 11 strings. They were ...