Usher Gives His Worst Performance To Date In Berlin

Justin Bieber's mentor, Usher has set an example that his young protege should not follow at a gig in Berlin last night.

The R&B star is suffering from a sinus infection but still decided to take to the stage, despite cancelling his show on Wednesday night.

A fan recorded a video of the Yeah! singer's performance and from the crowd's reaction, it's obvious that some wished he had cancelled last night's show.

Check out the video here...