Simple Sentences:
* The choir sang beautifully at the Christmas concert.
* The church has a large and talented choir.
* She joined the school choir in her freshman year.
* The choir practiced their new song for hours.
More Complex Sentences:
* The sound of the choir's voices filled the cathedral with a sense of peace.
* The conductor led the choir through a challenging piece with precision.
* The choir rehearsed diligently for their upcoming performance at Carnegie Hall.
* Joining the choir gave her a sense of belonging and a platform to express her musicality.
* The director encouraged the choir to sing with passion and conviction.
Figurative Language:
* The wind whistled a mournful choir through the bare branches of the trees.
* The city streets were filled with a cacophony of sounds, a choir of horns and sirens.
* The birds in the forest sang a vibrant choir of morning melodies.
These are just a few examples, and you can use "choir" in many different ways depending on the context of your writing.