* The choir sang in perfect unison, their voices blending seamlessly. (This emphasizes the perfect harmony and synchronization of the voices.)
* The children all shouted "Happy Birthday!" in unison, their laughter echoing through the room. (This highlights the shared action and unified expression.)
* The protesters marched in unison, their chants echoing their shared demand for change. (This emphasizes the collective action and shared purpose of the group.)
* The two companies worked in unison to complete the project, combining their resources and expertise. (This emphasizes collaboration and working together towards a common goal.)
* The orchestra played the final chord in unison, bringing the performance to a powerful conclusion. (This emphasizes the unified and powerful impact of the sound.)
The word "unison" can be used to describe a variety of situations where people or things act or sound together in a synchronized or harmonious way.