txtCommentary1=There remains only the question of why this particular combination of two {\uldb violins}{\v 105626}, {\uldb viola}{\v 105422}, and {\uldb cello}{\v 76489}. Why not, for example, one of each of the {\uldb string}{\v 97871} {\uldb instruments}{\v 84565}: violin, viola, cello, and {\uldb double bass}{\v 128912}?\par\par The double bass is not sufficiently nimble, being designed primarily to {\uldb double}{\v 107837} the {\uldb orchestral}{\v 134419} cello {\uldb line}{\v 85915} an {\uldb octave}{\v 90046} below. Moreover, the sound of the modern double
txtChapterHead=A Rationale
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txtCommentary2=\par\par\par\par\par\par bass is considerably larger than that of the members of the {\uldb string quartet}{\v 154839}. The double bass also plays well below the {\uldb range}{\v 93231} of the human voice, while only the very bottom of the cello range exceeds that of a deep-chested {\uldb bass}{\v 129340} singer.{\fs24\uldb \'80}{\v next}
