noun, noun or participle which takes 'suru', transitive verb
singing together; chorus
General term for multiple people singing together, whether in unison or harmony. Can refer to the act, the group, or the musical piece.
全校生徒で校歌を合唱した。
All the students sang the school song together.
合唱団に入って
I joined a choir and practice every week.
noun, noun or participle which takes 'suru', transitive verb
ensemble singing; choral singing
Emphasizes the organized, artistic aspect of group singing, often in a formal choir or choral setting. Overlaps with sense 1 but highlights the musical performance context.
第九の合唱は年末の風物詩だ。
The choral performance of Beethoven's Ninth is a year-end tradition.