It's Over: Usher Bows Out of Chicago Due to Illness

A couple months after making his debut on Broadway, Usher is calling his run in Chicago quits a few days before it was meant to be completed.

The singer has been diagnosed with an "extreme" case of strep throat, his mom/manager, Jonnetta Patton, announced Thursday.

He's also been diagnosed with humilation over being in a play also associated now with Ashlee Simpson.

Usher, who turns 28 on Saturday, began his Chicago stint on August 22 and has maintained a low profile during his stay in NYC.

"If you think that you will be able to indulge in the nightlife, the wild life of New York City and do Broadway, it's impossible," the singer said at the beginning of his run.

Sounds like the man had serious respect for Broadway. Sort of how we respect this Scarlett Johansson picture.

However, Usher fell ill on Friday, and his understudy filled in for him throughout the week, causing fans to demand refunds.

"He is really saddened that he cannot close out his last week in Chicago with a bang," his manager said. "He expresses his sincere apologies to all of his fans who purchased tickets to see him this final week."

Hey, we understand, Ush. We just think you should've been replaced with the hottest up and coming actor/singer out there: Kevin Federline.