txtCommentary={\f1 Back.} The back of a {\uldb string}{\v 97871} instrument is frequently constructed from two pieces joined together at the center, though single pieces are also used. The back is made of hardwoods, generally maple, which is both pleasing to look at and structurally resilient. The wood for the back is aged for up to six years after being cut so that the sap has a chance to dry completely. Along with the
txtHeading=Anatomy of a String Instrument
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txtCommentary1=top and sides, the back completes the \'93soundbox\'94 of the {\uldb instrument}{\v 84565}. It resonates when the instrument is bowed, much as a bell rings when it is struck. {\fs24\uldb\'80}{\v next}