In the years since, he's become a dependable source for commercial smashes, moving up through R&B's ranks – he co-wrote “Caught Up” on Usher's Confessions, which has sold more than 10 million copies in the U.S. – and eventually becoming one of Justin Bieber's go-to collaborators. Last year, Poo …
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Poo Bear Talks New Justin Bieber Collaboration, Star-Studded Solo Album
