Respuesta :
The type of composition where a group of people sing, and they mostly just comment on the 'moral' of the story or re-state what we already know, is called  Chorus.
What is an Opera?
This is known to be a kind of art form that is made up of singers and musicians that carry out a dramatic work through the use of text (libretto) and musical score, and it is done in a theatrical setting.
It is an art form that tells a story through music and singing. Unlike a musical, opera singers do not use microphones to amplify their voices, and the music, played by the orchestra, is completely live.
Therefore, The type of composition where a group of people sing, and they mostly just comment on the 'moral' of the story or re-state what we already know is called  Chorus.
Learn more about opera here,
https://brainly.com/question/1378985
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