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Justin Bieber

XPOSUREPHOTOS.COM

Looks like Justin Bieber's Polish concert was a success.

Despite being on the receiving end of rampant criticism after arriving late to his London show and canceling an appearance in Portugal after an onstage medical scare, the 19-year-old singer performed in Poland today, and based on the positive Twitter response, we assume all went well.

"Finally here. #poland. And I got a library . Anyone have a good book to recommend?" he tweeted upon his arrival. "showday. #Poland #BelieveTour," he posted today

Despite J.B.'s busy tour schedule, the pop star still didn't forget to wish his pal and mentor Usher good luck on The Voice tonight as the "More" singer makes his judging debut.

"@UsherRaymondIV @NBCTheVoice good luck tonight big bro," the "Beauty and a Beat" singer wrote this morning. 

Glad to see things are going better for the Biebs!