chamber orchestra
US /ˈtʃeɪm.bər ˌɔːr.kɪˈstrə/
UK /ˈtʃeɪm.bər ˌɔːr.kɪˈstrə/
1.
a small orchestra, typically with 10 to 40 players, that plays in a small hall or chamber
:
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The chamber orchestra performed a beautiful Mozart symphony.
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They are looking for new musicians to join their chamber orchestra.