Justin Bieber nearly shut down the famed Apollo Theater in Harlem during a taped concert for NBC last night. The 18-year-old heartthrob was close to the end of his set when the power for the stage instruments went out. It remained down for 40 minutes, but that didn’t stop him from performing for his fans. He sang “Boyfriend” to them as they patiently waited for the lights to come back on. Earlier in the evening, he brought out Ludacris to perform their Believe collaboration “All Around the World” for the first time live.

“Me and @ludacris blew up the power at the @ApolloTheater . Haha. Epic. #beastmode,” tweeted Bieber following the unforgettable night.