Simple and direct:
* The announcement of the concert cancellation caused pandemonium among the eager fans.
* When the power went out, pandemonium erupted in the crowded subway station.
Figurative and descriptive:
* The children's laughter created a joyous pandemonium in the playground.
* The sudden storm unleashed a pandemonium of wind and rain.
More nuanced examples:
* The political debate descended into pandemonium as tempers flared and accusations flew.
* There was a brief moment of pandemonium after the car crash, but then people rushed to help.
Remember: "Pandemonium" refers to a wild and chaotic situation. Use it when you want to convey a sense of uncontrolled disorder or uproar.