Justin Bieber Sings 'Boyfriend' During Concert Power Outage (Video)

After a power outage affected instruments for his New York City concert on Monday night, Justin Bieber had one reaction: the show must go on.

our editor recommends

MTV Sets Justin Bieber Special for Tuesday

Justin Bieber Performs on 'Today', Steals Matt Lauer’s First Tweet (Video)

The 18-year-old Canadian pop prince performed "Boyfriend," the first single from his new album Believe, despite the setback, directing the crowd of banshee-howling girls to sing along with him.

The outage happened at the end of the concert, shutting down stage instruments and some lights.

PHOTOS: Justin Bieber by the Numbers

"Then we hear the fire alarm," Bieber's manager, Scooter Braun, told The Associated Press. "Literally, the boy blew up the Apollo — he heated up the Apollo."

Braun said Bieber began to "get frustrated, because it had been 40 minutes," so the singer -- who had briefly entertained the audience with a power-less drum solo and singalong to celebrate Braun's birthday, continued on with "Boyfriend."

Meanwhile, NBC was capturing footage for the concert special "Justin Bieber: All Around the World," scheduled to air on Thursday.

Watch the video below.