txtCommentary1=Democratic impulses made possible the kind of dramatic {\uldb development}{\v 79173} in music that we associate with character development in a novel\'97a genre that enjoyed its first great flowering during the eighteenth century. In Mozart\'92s {\uldb quartets}{\v 154839}, {\uldb themes}{\v 99088} and the {\uldb instruments}{\v 84565} that play them are socially mobile\'97a lowly {\uldb viola}{\v 105422} can go from rags to riches; a theme encounters and conquers adversity.
txtCommentary2= Development occurs at several levels, beginning with the structure of the themes themselves. Contrast the degree of variety\'97and hence development\'97within this theme from the {\uldb finale}{\v 82354} of Mozart\'92s early {\uldb K.}{\v 137211} 157, to that within the theme of the {\uldb Minuet}{\v 87243} from K. 465.{\fs24\uldb \'80}{\v next}