According to a reviewer for G7, confused fans hung around for a half-hour, hoping Bieber would come back -- he had yet to perform "Baby."
"The public called for him, sang 'Baby,' and yet nothing," the review states. "The lights came on, Bieber's team started to take the equipment away and the fans realized it wasn't going to happen."
Bieber has made no mention of the incident and only said "Love u Brazil" following the show. On Sunday night he moved his tour to Rio de Janeiro where things went smoothly. "That was crazy!! Thank u rio!! Thank u brazil! Sold out stadium tonight! Amazing crowd. Hyped. Blessed. Thank u," he tweeted.
Of course Bieber has had problems with the bottle before, including a 2009 incident where he shook it all off and continued to perform.
At midnight on Sunday, Bieber capped off his semi-rough weekend by releasing another new song, the aptly titled "Bad Day." It's the fifth track during his Music Monday campaign.