Referring to a musical group:
* The chorus sang a beautiful rendition of "Hallelujah."
* The chorus was made up of students from all grades.
* The director praised the chorus for their strong harmonies.
Referring to a repeated part of a song:
* The chorus of the song was very catchy.
* I love the way the melody repeats in the chorus.
* The chorus is where the main message of the song is conveyed.
Referring to a group of people shouting something together:
* There was a chorus of boos from the audience.
* The crowd erupted in a chorus of cheers.
* The protesters chanted in a chorus of slogans.
Using "chorus" metaphorically:
* The chorus of disapproval was loud and clear.
* The media joined in a chorus of condemnation.
* The news reports formed a chorus of bad news.