txtCommentary={\f1 Top or belly.} The top, also known as the belly or soundboard, is the piece of wood (generally European spruce, sometimes pine or fir) that lies just under the {\uldb strings}{\v 97871}. Most often, two pieces are joined skillfully at the center to form the top. Once joined, they function as the soundboard, amplifying vibrations transmitted through the bridge. On the underside, a single rib called a bass bar
txtHeading=Anatomy of a String Instrument
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txtCommentary1=\par \par \par runs along the length of the top, enhancing the {\uldb instrument's}{\v 84565} {\uldb bass}{\v 129340} response. {\fs24\uldb\'80}{\v next}
