chamber music
US /ˈtʃeɪm.bər ˌmjuː.zɪk/
UK /ˈtʃeɪm.bər ˌmjuː.zɪk/

1.
Kammermusik
classical music composed for a small group of instruments—traditionally a group that could fit in a palace chamber or a large room.
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They performed a beautiful piece of chamber music by Mozart.
Sie spielten ein wunderschönes Stück Kammermusik von Mozart.
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The concert featured a string quartet playing chamber music.
Das Konzert zeigte ein Streichquartett, das Kammermusik spielte.