txtDefinition=To play a {\uldb pitch}{\v 92779}, {\uldb voice}{\v 105907}, or {\uldb theme}{\v 99088} on the same letter-{\uldb note}{\v 89586} a multiple of {\uldb octaves}{\v 90046} apart. The rare {\uldb melodic}{\v 86956} doublings in Mozart\'92s {\uldb string quartets}{\v 154839} invariably make a strong impact, as in the theme of the {\uldb \'93parenthesis\'94}{\v 90276} in the {\uldb finale}{\v 82354} (first example). The first half of the second example plays a {\uldb triad}{\v 102827} without any note doubled, while the second half, in all four {\uldb instruments}{\v 84565}, doubles the fifth degree of the triad.
