txtDefinition=Italian for \'93trembling.\'94 Rapid changes of {\uldb bow}{\v 21373} direction by a {\uldb string}{\v 97871} player on the same {\uldb pitch}{\v 92779}. Although some tremolos are played freely (\'93unmeasured\'94), Mozart\'92s tremolos are almost always measured, as in the {\uldb accompanimental}{\v 16698} {\uldb voices}{\v 105907} from the {\uldb finale}{\v 82354} below.