txtDefinition=Music in which each {\uldb part}{\v 90388} is played by more than one like {\uldb instrument}{\v 84565}. A modern symphony {\uldb orchestra}{\v 134419} may include 20 {\uldb first violins}{\v 126742}, 20 {\uldb second violins}{\v 140221}, 15 {\uldb violas}{\v 105422}, 15 {\uldb cellos}{\v 76489}, and 12 {\uldb double basses}{\v 128912}; each group generally plays the same part in {\uldb unison}{\v 104349}. The opposite of ensemble music is {\uldb chamber music}{\v 76679}, in which each part is played by only a single instrument.