. _:vb949154 . _:vb949228 . _:vb949277 . . . . . . . . . "stable" . . _:vb949222 . . _:vb949141 . . . . . . . . . . "\n A subclass of MusicalExpression, representing a signal, for example a master signal produced by a performance and a recording.\n " . "signal" . . _:vb949203 . . . "1" .